Code Playground

<header class="container">
  <nav class="nav-fostrap">
    <div class="logo">LOGO</div>
    <ul class="ml-a">
      <li>
        <a href="">Home</a>
      </li>
      <li>
        <a href="">Web Design</a>
      </li>
      <li>
        <a href="">Blogger</a>
      </li>
      <li>
        <a href="">SEO</a>
      </li>
      <li>
        <a href="">Google Adsense</a>
      </li>
      <li>
        <a href="">Advertising</a>
      </li>
      <li>
        <a href="">Business</a>
      </li>
    </ul>
  </nav>
  <div class="nav-bg-fostrap">
    <div class="navbar-fostrap">xxx</div>
    <a href="" class="title-mobile">Fostrap</a>
  </div>
</header>
<div class="card-layer">
  <div class="card-price">
    <div class="card-title">Сheckout</div>
    <div class="card-mid">
      <div class="box-pay">
        <div class="title o-5">Order number</div>
        <div class="number">342 434</div>
      </div>
      <hr>
      <div class="box-pay">
        <div class="title">Amount of payment</div>
        <div class="summa">5 000<span> $</span></div>
      </div>
      <hr>
    </div>
    <div class="card-footer">
      <ul>
        <li>A copy of the order will be sent to the specified phone number</li>
        <li>Depending on the chosen payment method, payment system fees may be charged.</li>
      </ul>
    </div>
  </div>
  <div class="card-pay">
    <div class="card-head">
      <div class="title">Select a Payment Method</div>
      <div class="box-pay-method">
        <button class="btn-method">
          <i class="fa fa-cc-visa"></i>
        </button>
        <button class="btn-method">
          <i class="fa fa-google-wallet"></i>
        </button>
        <button class="btn-method">
          <i class="fa fa-paypal"></i>
        </button>
        <button class="btn-method">
          <i class="fa fa-credit-card"></i>
        </button>
        <button class="btn-plus">
          <i class="fa fa-plus-circle"></i>
        </button>
      </div>
    </div>
    <div class="card-mid">
      <div class="title">Your contacts:</div>
      <input placeholder="Your name">
      <input placeholder="Your e-mail">
      <input placeholder="Your phone number" id="phone">
      <button class="btn-pay">Pay order</button>
    </div>
    <div class="card-footer">
      <a class="#">Terms of Service</a>
      <a class="#">Technical support</a>
    </div>
  </div>
</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery.maskedinput/1.4.1/jquery.maskedinput.min.js'></script>

@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css');
@import url('https://fonts.googleapis.com/css?family=Roboto');

body {
	background: #F0F0F0;
	color: #666;
	font-family: 'Roboto', sans-serif;
	margin: 0;
	background: url('https://pp.userapi.com/c851524/v851524846/3f7c2/wJQx5JHXDSU.jpg') no-repeat;
	-webkit-background-size: cover;
	background-size: cover;
}

.content {
	height: 200px;
}

.m-a{
	margin: 0 auto;
}

a{
	text-decoration: none;
}

.ml-a{
	margin-left: auto!important;
}

.container {
	width: 1200px;
	margin: 0 auto;
}

.nav-fostrap {
	display: flex;
	align-items: center;

ul {
		list-style-type: none;
		margin: 0;
		padding: 0;
		display: flex;
	}

a {
		padding: 15px 20px;
		display: block;
		color: #505050;
	}
}

.nav-fostrap li:hover a {
	background: #fff;
}

.title-mobile {
	display: none;
}

.navbar-fostrap{
	display: none;
}

@media only screen and (max-width:900px) {
	.container{
		width: 100%;
	}

.nav-fostrap {
		background: #fff;
		width: 200px;
		height: 100%;
		display: block;
		position: fixed;
		left: -200px;
		top: 60px;
		margin: 0;
		border: 0;
		border-radius: 0;
		overflow-y: auto;
		overflow-x: hidden;
	}
	.title-mobile {
		position: fixed;
		display: block;
		top: 10px;
		font-size: 20px;
		left: 100px;
		right: 100px;
		text-align: center;
		color: #FFF;
	}
	.nav-fostrap.visible {
		left: 0;
		transition: left 0.25s ease;
	}

.nav-bg-fostrap {
		display: inline-block;
		vertical-align: middle;
		width: 100%;
		height: 50px;
		margin: 0;
		position: absolute;
		top: 0;
		left: 0;
		background: #03A9F4;
		padding: 12px 0 0 10px;
		box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.26);
	}

.navbar-fostrap {
		display: inline-block;
		vertical-align: middle;
		height: 50px;
		cursor: pointer;
		margin: 0;
		position: absolute;
		top: 0;
		left: 0;
		padding: 12px;
	}

.nav-fostrap ul {
		flex-direction: column;
	}

.nav-fostrap li:hover a {
		background: #03A9F4;
		color: #fff !important;
	}

.cover-bg {
		background: rgba(0,0,0,0.5);
		//position: fixed;
		top: 0;
		bottom: 0;
		left: 0;
		right: 0;
	}
}

.fixed-top {
	position: fixed;
	top: 0;
	right: 0;
	left: 0;
}

.o-5{
	opacity: .5;
}

.card-layer{
	margin: 70px auto 0;
	display: flex;
	width: 1000px;
}

.card-price{
	width: 300px;
	background: url('https://pp.userapi.com/c851524/v851524846/3f7b8/mj2Hk3aTnL4.jpg') no-repeat;
	-webkit-background-size: cover;
	background-size: cover;
	color: #fff;
	padding: 60px 40px;

> *{
		width: calc(100% - 20px);
	}

hr{
		border: 0.5px solid #44416d;
		width: 170px;
		margin-left: 0;
	}

.card-mid > *{
		margin-bottom: 40px;
	}

.card-title{
		font-size: 34px;
		margin-bottom: 40px;
		font-weight: 600;
	}

.title{
		font-size: 12px;
	}

.number{
		font-size: 18px;
		font-weight: 600;
	}

.summa{
		font-size: 35px;
		font-weight: 600;
	}

.card-footer{
		font-size: 10px;
		color: #a399b1;
		margin-left: 15px;
		width: calc(100% - 67px);
	}

ul{
		margin: 0;
		padding: 0;

li + li{
			margin-top: 15px;
		}
	}
}

.card-pay{
	width: 350px;
	background-color: #161b21;
	padding: 40px;
	margin: 40px 0;
	display: flex;
	flex-direction: column;
	justify-content: space-between;

.title{
		font-size: 14px;
		color: #fff;
		opacity: .5;
		margin-bottom: 15px;
	}
  
  .check{
    background: #eb6532;
  }

.box-pay-method{
		display: flex;
		justify-content: space-between;
	}

.btn-plus{
		padding: 5px 10px;
		background: transparent;
		border: none;
		color: #fff;
		font-size: 30px;
		cursor: pointer;
		transition: all .2s ease-in-out;

&:focus{
			outline: none;
		}

&:hover{
			color: #eb6532;
		}
	}

.btn-pay{
		padding: 10px 20px;
		background: linear-gradient(to right, rgba(113,102,238,1) 0%, rgba(70,62,111,1) 100%);
		color: #fff;
		border: none;
		text-transform: uppercase;
		border-radius: 5px;
		font-weight: 600;
		transition: all .2s ease-in-out;

&:focus{
			outline: none;
		}

&:hover{
			opacity: .7;
		}
	}

.card-mid{
		display: flex;
		flex-direction: column;
		width: calc(100% - 60px);

.title{
			margin-bottom: 0;
		}

> * +*{
			margin-top: 15px;
		}

input{
			background-color: #212a33;
			border: 1px solid transparent;
			border-radius: 5px;
			padding: 10px 15px;
			color: #fff;

&:focus, &:hover{
				outline: none;
				border: 1px solid #3d444c;
			}
		}
	}

.card-footer{
		font-size: 10px;
		display: flex;

> a + a{
			margin-left: 20px;
		}

> a{
			color: #fff;
			text-transform: uppercase;
			opacity: .5;
			cursor: pointer;

&:hover{
				opacity: 1;
			}
		}
	}
}

.btn-method{
  padding: 7px 20px;
  background: #242831;
  border: none;
  color: #fff;
  font-size: 26px;
  cursor: pointer;
  border-radius: 5px;
  transition: all .2s ease-in-out;

&:focus{
    outline: none;
  }

&:hover{
    background: #eb6532;
  }
}

Frontend Forever App