/*! normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */

/* Document
   ========================================================================== */

/**
 * 1. Correct the line height in all browsers.
 * 2. Prevent adjustments of font size after orientation changes in iOS.
 */

html {
  line-height: 1.15; /* 1 */
  -webkit-text-size-adjust: 100%; /* 2 */
}

/* Sections
   ========================================================================== */

/**
 * Remove the margin in all browsers.
 */

body {
  margin: 0;
}

/**
 * Render the `main` element consistently in IE.
 */

main {
  display: block;
}

/**
 * Correct the font size and margin on `h1` elements within `section` and
 * `article` contexts in Chrome, Firefox, and Safari.
 */

h1 {
  font-size: 2em;
  margin: 0.67em 0;
}

/* Grouping content
   ========================================================================== */

/**
 * 1. Add the correct box sizing in Firefox.
 * 2. Show the overflow in Edge and IE.
 */

hr {
  box-sizing: content-box; /* 1 */
  height: 0; /* 1 */
  overflow: visible; /* 2 */
}

/**
 * 1. Correct the inheritance and scaling of font size in all browsers.
 * 2. Correct the odd `em` font sizing in all browsers.
 */

pre {
  font-family: monospace, monospace; /* 1 */
  font-size: 1em; /* 2 */
}

/* Text-level semantics
   ========================================================================== */

/**
 * Remove the gray background on active links in IE 10.
 */

a {
  background-color: transparent;
}

/**
 * 1. Remove the bottom border in Chrome 57-
 * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
 */

abbr[title] {
  border-bottom: none; /* 1 */
  text-decoration: underline; /* 2 */
  -webkit-text-decoration: underline dotted;
  text-decoration: underline dotted; /* 2 */
}

/**
 * Add the correct font weight in Chrome, Edge, and Safari.
 */

b,
strong {
  font-weight: bolder;
}

/**
 * 1. Correct the inheritance and scaling of font size in all browsers.
 * 2. Correct the odd `em` font sizing in all browsers.
 */

code,
kbd,
samp {
  font-family: monospace, monospace; /* 1 */
  font-size: 1em; /* 2 */
}

/**
 * Add the correct font size in all browsers.
 */

small {
  font-size: 80%;
}

/**
 * Prevent `sub` and `sup` elements from affecting the line height in
 * all browsers.
 */

sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.5em;
}

/* Embedded content
   ========================================================================== */

/**
 * Remove the border on images inside links in IE 10.
 */

img {
  border-style: none;
}

/* Forms
   ========================================================================== */

/**
 * 1. Change the font styles in all browsers.
 * 2. Remove the margin in Firefox and Safari.
 */

button,
input,
optgroup,
select,
textarea {
  font-family: inherit; /* 1 */
  font-size: 100%; /* 1 */
  line-height: 1.15; /* 1 */
  margin: 0; /* 2 */
}

/**
 * Show the overflow in IE.
 * 1. Show the overflow in Edge.
 */

button,
input { /* 1 */
  overflow: visible;
}

/**
 * Remove the inheritance of text transform in Edge, Firefox, and IE.
 * 1. Remove the inheritance of text transform in Firefox.
 */

button,
select { /* 1 */
  text-transform: none;
}

/**
 * Correct the inability to style clickable types in iOS and Safari.
 */

button,
[type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button;
}

/**
 * Remove the inner border and padding in Firefox.
 */

button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
  border-style: none;
  padding: 0;
}

/**
 * Restore the focus styles unset by the previous rule.
 */

button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
  outline: 1px dotted ButtonText;
}

/**
 * Correct the padding in Firefox.
 */

fieldset {
  padding: 0.35em 0.75em 0.625em;
}

/**
 * 1. Correct the text wrapping in Edge and IE.
 * 2. Correct the color inheritance from `fieldset` elements in IE.
 * 3. Remove the padding so developers are not caught out when they zero out
 *    `fieldset` elements in all browsers.
 */

legend {
  box-sizing: border-box; /* 1 */
  color: inherit; /* 2 */
  display: table; /* 1 */
  max-width: 100%; /* 1 */
  padding: 0; /* 3 */
  white-space: normal; /* 1 */
}

/**
 * Add the correct vertical alignment in Chrome, Firefox, and Opera.
 */

progress {
  vertical-align: baseline;
}

/**
 * Remove the default vertical scrollbar in IE 10+.
 */

textarea {
  overflow: auto;
}

/**
 * 1. Add the correct box sizing in IE 10.
 * 2. Remove the padding in IE 10.
 */

[type="checkbox"],
[type="radio"] {
  box-sizing: border-box; /* 1 */
  padding: 0; /* 2 */
}

/**
 * Correct the cursor style of increment and decrement buttons in Chrome.
 */

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
  height: auto;
}

/**
 * 1. Correct the odd appearance in Chrome and Safari.
 * 2. Correct the outline style in Safari.
 */

[type="search"] {
  -webkit-appearance: textfield; /* 1 */
  outline-offset: -2px; /* 2 */
}

/**
 * Remove the inner padding in Chrome and Safari on macOS.
 */

[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

/**
 * 1. Correct the inability to style clickable types in iOS and Safari.
 * 2. Change font properties to `inherit` in Safari.
 */

::-webkit-file-upload-button {
  -webkit-appearance: button; /* 1 */
  font: inherit; /* 2 */
}

/* Interactive
   ========================================================================== */

/*
 * Add the correct display in Edge, IE 10+, and Firefox.
 */

details {
  display: block;
}

/*
 * Add the correct display in all browsers.
 */

summary {
  display: list-item;
}

/* Misc
   ========================================================================== */

/**
 * Add the correct display in IE 10+.
 */

template {
  display: none;
}

/**
 * Add the correct display in IE 10.
 */

[hidden] {
  display: none;
}

html, body{
    margin: 0;
    font-family: 'Open Sans', sans-serif; 
    color: #212121;
}

img{
	max-width: 100%;
	height: auto;
}
p{
  margin:0px;
  padding: 0px;
}
ul{
  margin:0px;
  padding: 0px;
}
.header-wrapper{
  height: 100vh;
  width: 100%;
}
.slider-wrapper, .slide-item {
  position: relative;
  height: 100vh;
}
.slide-item img {
  position: absolute;
  top: 0px;
  left: 0px;
  height: 100vh;
  width: 100%;
}
.slider-wrapper .slide-item .slider-text {
  font-size: 60px;
  font-weight: 600; 
  width: 500px;
  height: 400px;
  color: #fff;
  position: relative;
}
/* стрелки */
.slider-wrapper .slick-arrow{
  position: absolute;
  top: calc(50% - 40px);
  z-index: 10;
  font-size: 0px;
  outline:none;
  width: 50px;
  height: 100px;
  border: 0px;
  cursor: pointer;
}

.slider-wrapper  .slick-arrow.slick-prev{
  left: 0px;
  background: url(../img/arrow-left.png) center center no-repeat, rgba(204, 204, 204, 0.4);
  background-size: contain;
}
.slider-wrapper  .slick-arrow.slick-next{
  right:0px;
  background: url(../img/arrow-right.png) center center no-repeat, rgba(204, 204, 204, 0.4);
  background-size: contain;
}
.slider-wrapper  .slick-arrow.slick-prev:hover{
  background: url(../img/arrow-left.png) center center no-repeat, rgba(0, 137, 123, 1);
  background-size: contain;
}
.slider-wrapper  .slick-arrow.slick-next:hover{
  background: url(../img/arrow-right.png) center center no-repeat, rgba(0, 137, 123, 1);
  background-size: contain;
}
/* лента слайдов */
.slick-track{
  display: flex;
}
/* ограничивающая оболочка */
.slick-list{
  overflow: hidden;
  height: 100vh;
}
header {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
}
.header-top-area {
  width: 100%;
  background-color: transparent;
  height: 42px;
}
.container{
  width: 1170px;
  margin:0px auto;
}
.row .col-item{
  box-sizing: border-box;
  margin: 0px 15px;
  display: flex;
  flex-flow: row nowrap;
}
.row .col-item:nth-child(3){
  margin: 0px 15px 0px auto;
}
.row .col-item p{
  font-size: 18px;
  font-weight: 400;
  line-height: 22px;
  padding: 10px 0px 10px 10px;
  color: #fff;
}
.header-top-area .col-item span{  
  display: block;
  width: 25px;
  height: 25px;
  margin: auto 0px;
  color: #fff;
}
.row .col-item:nth-child(1) span{
  background: url(../img/icon-phone-call.png) center center no-repeat;
  background-size: contain;
}
.row .col-item:nth-child(2) span{
  background: url(../img/icon-mail.png) center center no-repeat;
  background-size: contain;
}
.row .col-item:nth-child(3) span{
  background: url(../img/icon-placeholder.png) center center no-repeat;
  background-size: contain;
}
.nav-area{
  width:100%;
  background: #fff;
}
.nav-wrapper{
  height: 100px;
  display: flex;
  flex-flow: row nowrap;
  justify-content: space-between;
  align-items: center;
}
.logo{
  font-size: 25px;
  font-weight: bold;
  line-height: 22px;
  color: #212121;
}
.navigation {
    width: 600px;
}
.name-menu{
  display: none;
}
.nav-menu{
  list-style-type: none;
  display:flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0px;
}
.drop-nav-menu{
  display: none;
  -webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
}
.nav-menu li > a, .drop-nav-menu li > a{
  display: block;
  text-decoration:none;  
  font-size: 20px;
  line-height: 22px;
  font-weight: 600;
  color: #212121;
}
.nav-menu a:hover{
/*  color: #00897b;*/
  text-decoration: underline;
}
.buttons-wrapper-home {
  position: relative;
  z-index: 10;
  width: 100%;
}
.home-page {
  position: relative;
  display: flex;
  flex-flow: row wrap;
  width: 750px;
  height: calc(100vh - 142px);
  align-items: flex-end;
  color: #fff;
  margin: 142px auto 0px auto;
}
.title-home-page {
    width: 100%;
    text-align: center;    
}
.title-home-page h1 {
  font-size: 60px;
  font-weight: 600;
  margin: 50px auto 30px;
}
.title-home-page p {
  font-size: 22px;
  font-weight: 400;
  margin: 0px auto;
}
.buttons-home-page {
  display: flex;
  flex-flow: row wrap;
  width: 485px;
  /*width: 100%;*/
  margin: 0px auto 25px;
  align-items: center;
  align-content: space-between;
  height: 200px;
}
.buttons-home-page .button-services, 
.buttons-home-page .button-some {
  box-sizing: border-box;
  width: 220px;
  height: 70px;
  line-height: 70px;
  margin: 0px auto;
  border: 1px solid #fff;
  text-align: center;
  align-items: center;
  cursor: pointer;
}
.button-arrow {
  width: 50px;
  height: 50px;
  margin: 0px auto;
  background: url(../img/arrow-down.png);
  background-position: center center;
  background-repeat: no-repeat;
  cursor: pointer;
}
.buttons-home-page .button-services:hover, 
.buttons-home-page .button-some:hover{
  background: #00897b;
  border: 0px solid #fff;
  line-height: 72px;
}
.button-arrow:hover{
  background: url(../img/arrow-down.png) 
  center center no-repeat, #00897b;
  border-radius: 2px;
  line-height: 52px;
}
.proposal {
  display: flex;
  flex-flow: row wrap;
  width: 100%;
  justify-content: center;
}
.proposal-title {
  width: 630px;
  margin: 115px auto;
}
.proposal-title h2 {
  font-size: 30px;
  font-weight: bold;
  text-align: center;
  line-height: 22px;
  margin: 0px;
}
.proposal-title > p, .adv-item > p{
  font-size: 15px;
  font-weight: 400;
  text-align: center;
  line-height: 22px;
}
.advantages {
  display: flex;
  flex-flow: row wrap;
  justify-content: flex-start;
  width: 100%;
  margin-bottom: 85px;
}
.advantages .adv-item {
  display: flex;
  flex-flow: column nowrap;  
  flex-grow: 1;
}
.adv-item-text, .adv-item-title {
  width: 265px;
  margin: 0px auto;
}
.adv-item .adv-item-title{
  font-size: 20px;
  font-weight: 600;
  text-align: center;
  margin: 0px auto 25px;
}
.adv-item span {
  width: 62px;
  height: 62px;
  margin: 0px auto 40px;
  display: block;
}
.adv-item:nth-child(1) span{
  background: url(../img/icon1.png) 
  left top no-repeat;  
}
.adv-item:nth-child(2) span{
  background: url(../img/icon2.png) 
  left top no-repeat;
}
.adv-item:nth-child(3) span{
  background: url(../img/icon3.png) 
  left top no-repeat;
}
.services{
  background: #e4fdf9;
  width: 100%;
}
.services-wrapper, .partners-wrapper {
  display: flex;
  flex-flow: column;
  align-items: center;
}
.services-title {
  margin: 115px auto;
  width: 100%;
}
.services-title > h2, .partners-title > h2, .contact-title > h2{
  font-size: 30px;
  font-weight: bold;
  text-align: center;
  line-height: 22px;
  margin: 0px;
}
.services-title > p {
  font-size: 15px;
  font-weight: 400;
  text-align: center;
  line-height: 22px;
  margin: 0px;
}
.services-items, .partners-items, .contact-items{
  display: flex;
  flex-flow: row wrap;
  justify-content: center;
  width: 100%;
  margin-bottom: 85px;
}
.services-item{
  display: flex;
  flex-flow: column;
  background: #fff;
  margin: 15px;
  width: calc((100%/12) * 4 - 30px);
}
.serv-item-text {
  margin: 0px auto 50px;
  text-align: center;
  width: 290px;
}
.serv-item-text > h3 {
  font-size: 20px;
  font-weight: 600;
  text-align: center;
  line-height: 22px;
  margin: 0px auto 25px;
}
.serv-item-text > p, .partner-item > p{
  font-size: 15px;
  font-weight: 400;
  text-align: center;
  line-height: 25px;
  margin: 0px;
}
.serv-item-button, .about-us-button, .partners-button{
  box-sizing: border-box;
  display: flex;
  flex-flow: row nowrap;
  justify-content: center;
  align-items: center;
  width: 150px;
  height: 50px;
  border: 2px solid #212121;
  margin: 0px auto 50px;
  font-size: 20px;
  font-weight: 600;
  cursor: pointer;
}
.serv-item-button {
  margin-top: auto;
}
.serv-item-button:hover, 
.about-us-button:hover, .partners-button:hover{
  border: 0px solid #fff;
  background:  #00897b;
  color: #fff;
}
.serv-item-img {
  margin: 40px auto;
}
.serv-item-img span {
  width: 62px;
  margin: 0px auto;
  display: block;
  color: black
}
.serv-item-img span i {
  display: block;
  width: 62px;
  text-align: center;
}
/* .services-item:nth-child(1) .serv-item-img span{
  background: url(../img/trash.png) 
  left top no-repeat;
  background-size: contain;
}
.services-item:nth-child(2) .serv-item-img span{
  background: url(../img/shovel.png) 
  left top no-repeat;
  background-size: contain;
}
.services-item:nth-child(3) .serv-item-img span{
  background: url(../img/business-process.png) 
  left top no-repeat;
  background-size: contain;
}
.services-item:nth-child(4) .serv-item-img span{
  background: url(../img/dog-and-woman.png) 
  left top no-repeat;
  background-size: contain;
}
.services-item:nth-child(5) .serv-item-img span{
  background: url(../img/web-site.png) 
  left top no-repeat;
  background-size: contain;
}
.services-item:nth-child(6) .serv-item-img span{
  background: url(../img/design.png) 
  left top no-repeat;
  background-size: contain;
} */
.about-us{
  background: #fff;
}
.about-us-wrapper{
  display: flex;
  flex-flow: column nowrap;
  width: 630px;
  margin: 0px auto;
}
.about-us-title{
  margin: 115px auto 35px;
  width: 100%;
}
.about-us-text{
  margin: 0px auto 50px;
}
.about-us-title > h2{
  font-size: 30px;
  font-weight: bold;
  text-align: center;
  line-height: 22px;
  margin: 0px;
  padding: 0px;
}
.about-us-text > p, .contact-title > p{
  font-size: 15px;
  font-weight: 400;
  text-align: center;
  line-height: 22px;
  margin: 0px;
}
.about-us-button{
  width: auto;
  height: 50px;
  margin: 0px auto 115px;
  padding: 0 20px;
}
/* partners block ===========================*/
.partners{
  background: #e4fdf9;
  width: 100%;
}
.partners-title {
  margin: 115px auto;
  width: 630px;
}
.partners-items{
  margin-bottom: 35px
}
.partner-item {
  display: flex;
  flex-flow: column;
  margin: 15px;
  width: calc((100%/12) * 4 - 30px);
  background: white;
}
.partner-item > p {
  margin: 10px auto 15px;
  font-size: 18px;
}
.partner-item-img span {
  display: block;
  max-width: 370px;
  height: 370px;
  margin: 10px auto;    
}
.partner-item:nth-child(1)  .partner-item-img span{
  background: url(../img/partner-sert1.jpg) 
  center center no-repeat;
  background-size: contain;
}
.partner-item:nth-child(2) .partner-item-img span{
  background: url(../img/partner-sert2.png) 
  center center no-repeat;
  background-size: contain;
}
.partner-item:nth-child(3) .partner-item-img span{
  background: url(../img/partner-sert3.jpg) 
  center center no-repeat;
  background-size: contain;
}
.partner-item:nth-child(4) .partner-item-img span{
  background: url(../img/partner-sert4.jpg) 
  center center no-repeat;
  background-size: contain;
}
.partner-item:nth-child(5) .partner-item-img span{
  background: url(../img/partner-sert5.jpg) 
  center center no-repeat;
  background-size: contain;
}
.partner-item:nth-child(6) .partner-item-img span{
  background: url(../img/partner-sert6.png) 
  center center no-repeat;
  background-size: contain;
}
.partners-wrapper .partners-button{
  width: 200px;
  margin: 0px auto 115px;
}
/*===  section contact-form  ======*/
.contact-form{
  background: url(../img/bg-contact-form.png) center top no-repeat;
  background-size: cover;
}
.contact-form-wrapper{
  margin: 0px auto;
  height: 100%;
  width: 1030px;
  color: #fff;
}
/*это один блок*/
.contact-info {
  display: flex;
  flex-flow: row wrap;
}
.contact-title {
  margin: 115px auto 100px;
  width: 640px;
}
.contact-info .contact-title > h2 {
  margin: 0px auto 30px;
}
.contact-items{
  margin-bottom: 70px;
}
.contact-item {
  display: flex;
  flex-flow: column;
  margin: 0px 50px;
  width: calc((100%/12) * 3 - 50px);
  text-align: center;
}
.contact-item > p{
  font-size: 20px;
  font-weight: 600;
  line-height: 28px;
  margin: 0px auto;
}
.contact-item-img{
  margin-bottom: 35px;
}
.contact-item .contact-item-img span {
  display: block;
  max-width: 100px;
  height: 100px;
  margin: 0px auto;
}
.contact-item:nth-child(1) .contact-item-img span{
  background: url(../img/icon-placeholder2.png) 
  center center no-repeat;
  background-size: contain;
}
.contact-item:nth-child(2) .contact-item-img span{
  background: url(../img/icon-phone-call2.png) 
  center center no-repeat;
  background-size: contain;
}
.contact-item:nth-child(3) .contact-item-img span{
  background: url(../img/icon-mail2.png) 
  center center no-repeat;
  background-size: contain;
}
/*это второй блок*/
.form-fields {
  max-width: 1030px;
  background: transparent;
  padding-bottom: 100px;
}
.form{
  box-sizing: border-box;
}
.row {
  box-sizing: border-box;
  display: flex;
  flex-flow: row wrap;
  justify-content: center;
  margin-right: -15px;
  margin-left: -15px;
}
.col-6, .col-12{
  box-sizing: border-box;
  width: calc(100%/12 * 6 - 30px);
  margin: 0px 15px 30px;
}
.col-12{
  width: calc(100% - 30px);
}
.col-6 input, .col-12 textarea, .btn {
  color: #4d4d4d;
  box-sizing: border-box;
  width: 100%;
/*  color: #212121;*/
  font-size: 20px;
  line-height: 28px;
  font-weight: 600;
  border-radius: 10px;
  border: 0px solid transparent;
  padding: 20px;
  outline:none;
}
.btn {
  box-sizing: border-box;
  width: 200px;
  height: 55px;
  text-align: center;
  padding: 0px;
  margin: 0px 15px 0px auto;
  cursor: pointer;
}
.btn:hover{
  background: #333399;
  color: #fff;
}
footer{
  width: 100%;
}
.footer-wrapper{
  display: flex;
  justify-content: center;
  align-items: center;
}
.footer-title{
  font-size: 20px;
  font-weight: 600;
  text-align: center;
  line-height: 22px;
}
.scrollup{
/*  color: rgba(33,33,33, 0.4);*/
  color: rgba(33,33,33);
  z-index: 999;
  position: fixed;
  bottom: 62px;
  right: 52px;
  display: none;
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: #fff;
}
.scrollup:hover{
  background: rgba(33,33,33, 0.4);
  color: white;
}
.scrollup .fa-3x{
  display: none;
  margin-left: 10px;
  width:32px
}
.scrollup .fa-4x{
  display: inline-block;
  font-size: 4em;
  width: 42px;
  max-height: 42px;
  margin-left: 5px;
  margin-top: -8px;
}
/*==================Adaptiv=============*/
/*992px-1200px*/
@media screen and (max-width: 1200px){
  .container{
    width: 940px;
  }
  .contact-form-wrapper{
    width: 890px;
  }
}
/*=====768px-992px=======*/
@media screen and (max-width: 992px){
  .container{
    width: 716px;
  }
  .row .col-item p {
    font-size: 15px;
  }
  .logo {
    font-size: 23px;    
  }
  .nav-menu li > a, .drop-nav-menu li > a {
    font-size: 18px;
  }
  .title-home-page h1 {
    font-size: 50px;
  }
  .title-home-page p {
    font-size: 20px;
  }
  .button-services, .button-some{
    font-size: 15px;
  }
  .serv-item-button, .about-us-button, 
  .partners-button, .btn-form{
    font-size: 18px;
  }
  .navigation {
    width: 490px;
  }
  .contact-form-wrapper{
    width: 668px;
  }
  .advantages, .contact-items {
    justify-content: center;
    margin-left: -15px;
    margin-right: -15px;
  }
  .advantages .adv-item {    
    flex-grow: 0; 
    margin: 0px 15px 30px 15px;
    width: calc(100%/12 * 6 - 30px);
  }
  .services-items, .partners-items{
    justify-content: flex-start;
    margin-left: -15px;
    margin-right: -15px;
  }
  .services-item, .partner-item{    
    margin: 0px 15px 30px 15px;
    width: calc(100%/12 * 6 - 30px);
  }
  .contact-item{
    margin: 0px 15px;
    width: calc(100%/12 * 4 - 30px);
  }
  .contact-item > p{
    font-size: 17px;
  }
  .contact-item .contact-item-img span {
    max-width: 80px;
    height: 80px;
  }
  .form-fields {
    padding-bottom: 70px;
  }
  .footer-title {
    font-size: 18px;
  }
}
/*=====576px-768px========*/
@media screen and (max-width: 768px){
  .container{
    width: 524px;
  }
  .header-top-area {
    height: 84px;
  }
  .row .col-item:nth-child(3) {
    margin: 0px 15px;
  }
  .nav-wrapper {
    height: 60px;
  }
  .nav-menu, .drop-nav-menu {
    box-sizing: border-box;
    display: none;
    position: absolute;
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: space-between;
    top: 144px;
    left: 0px;
    width: 100%;
    background: #fff;
    margin: 0px;
    padding: 0px;
    border-top: 1px dashed #999;
  }
  .nav-menu li, .drop-nav-menu li{
    display: block;
    height: 20px;
    width: fill-available;
    margin: 11px 50px;
  }
  .nav-menu a, .drop-nav-menu a{
    font-size: 20px;
    line-height: 20px;
  }
  .nav-menu li > a:hover, .drop-nav-menu li > a:hover{
    text-decoration: underline;
  }
  .menu-btn {
    display: flex;
    align-items: center;
    position: relative;
    width: 25px;
    height: 25px;
    cursor: pointer;
    z-index: 1;
  }
  /* добавляем "гамбургер" */
  .menu-btn > span,
  .menu-btn > span::before,
  .menu-btn > span::after {
    display: block;
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: black;
  }
  .menu-btn > span::before {
    content: '';
    top: -8px;
  }
  .menu-btn > span::after {
    content: '';
    top: 8px;
  }
  .navigation {
    width: 490px;
    display: flex;
    flex-flow: row-reverse;
  }
  .home-page {
    width: 500px;
  }
  .proposal-title {
    width: 100%;
    margin: 80px auto;
  }
  .advantages {    
    margin-bottom: 35px;
  }
  .advantages .adv-item {
    margin: 0px 15px 45px 15px;
    width: calc(100%/12 * 12 - 30px);
  }
  .services-title {
    margin: 80px auto;
    width: 100%;
  }
  .services-items, .partners-items {
    justify-content: center;
    margin-bottom: 35px;
  }
  .services-item, .partner-item {
    background: white;
    margin: 0px 45px 45px 45px;
    width: calc(100%/12 * 12 - 90px);
  }
  .about-us-wrapper {
    width: 100%;
  }
  .about-us-title {
    margin: 80px auto;
    width: 100%;
  }
  .about-us-button {
    margin: 0px auto 80px;
  }
  .partners-title {
    margin: 80px auto;
    width: 100%;
  }
  .partner-item-img span {
    margin: 10px auto;
  }
  .partner-item > p {
    margin: 0px auto 20px;
    font-size: 18px;
  }
  .partners-wrapper .partners-button {    
    margin: 0px auto 80px;
  }
  /*section contact*/
  .contact-form-wrapper {
    width: 524px;
  }
  .contact-title {
    margin: 80px auto;
    width: 100%;
  }
  .contact-item{
    flex-flow: row;
    margin: 0px 45px 20px;
    width: calc(100%/12 * 12 - 90px);
  }
  .contact-item-img{
    margin: 0px;
  }
  .contact-item .contact-item-img span {
    max-width: 60px; 
    width: 60px;
    height: 60px;
  }
  .contact-item > p {
    margin: 0px;
    flex-grow: 1;
    text-align: end;
  }
  .contact-items {
    margin-bottom: 40px;
  }
  .col-6, .col-12 {
    width: calc(100%/12 * 12 - 30px);
  }
  .col-6 input, .col-12 textarea, .btn {
    padding: 15px;
  }
  .footer-wrapper {
    height: 60px;
  }
}
/*==================-576px========================*/
@media screen and (max-width: 576px){
  .container {
    width: 350px;
  }
  .header-top-area {
    height: 56px;
  }
  .nav-menu, .drop-nav-menu {
    top: 116px;
  }
  .header-top-area .col-item span {
    width: 15px;
    height: 15px;
    margin: auto 0px;
  }
  .row .col-item p {
    font-size: 14px;
    padding: 3px;
  }
  .home-page {
    width: 350px;
  }
  .title-home-page h1 {
    font-size: 40px;
  }
  .title-home-page p {
    font-size: 18px;
  }
  .buttons-home-page .button-services, .buttons-home-page .button-some {
    width: 220px;
    height: 60px;
    line-height: 60px;
    margin: 0px auto 20px;
  }
  .buttons-home-page .button-services:hover,
  .buttons-home-page .button-some:hover{
    line-height: 62px;
  }
  .button-arrow {
    width: 140px;
    margin: 0px auto;
  }
  .services-item, .partner-item {
    margin: 0px 20px 45px 20px;
    width: calc(100% - 40px);
  }
  .about-us-text > p, .contact-title > p {
    font-size: 15px;
    text-align: left;
    margin: 0px 10px;
  }
  .contact-form-wrapper {
    width: 350px;
  }
  .contact-item {
    margin: 0px 10px 20px;
    width: calc(100%/12 * 12 - 20px);
  }
  .contact-item-img {
    margin: 0px 20px 0px 40px;
  }
  .contact-item > p {
    margin: 0px;
    flex-grow: 0;
    text-align: left;
  }
}