JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="ru">
<head>
	<meta charset="UTF-8">
	<link href='https://fonts.googleapis.com/css?family=Roboto:400,100,100italic,300,300italic,400italic,500,500italic,700,700italic&subset=latin,cyrillic' rel='stylesheet' type='text/css'>
    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" type="text/css" href="css/symbols-nerds.css">
	<title>Nerds market</title>
</head>
<body>
<!-- HEADER -->
	<header>
		<div class="container">
			<div class="logo">
				<a href="index.html"><img src="../nerd/img/logo.png" alt="logo"></a>
			</div>
			<ul class="menu">
				<li><a href="index.html">Студия</a></li>
				<li><a href="#">Клиенты</a></li>
				<li class="active"><a href="market.html">Магазин</a></li>
				<li><a href="#">Контакты</a></li>
			</ul>
			<div class="basket">
				<a href="#" class="basket-enter"><i class="icon-basket active"></i> Корзина</a>
			</div>
			<div class="hello clearfix">Добро пожаловать в магазин<br> готовых макетов</div>
		</div>	
	</header>
<!-- HEADER END -->

<!-- SIDE BAR -->
	<main class="market">
		<div class="container">
			<div class="catalog clearfix">
				<div class="side-bar">
					<h2>Стоимость:</h2>
					<div class="range-filter">
						<div class="range-controls">
							<div class="scale"><div style="margin-left: 50px; width: 100px" class="bar"></div></div>
							<div class="toggle min-toggle"></div>
							<div class="toggle max-toggle"></div>
						</div>
						<div class="price-controls">
							от <input class="min-price" type="text" value="5000">
							до <input class="max-price" type="text" value="15000">
						</div>
					</div>
					<div class="filters">
						<h2>Сетка:</h2>
						<form method="get" action="/echo">
						<input type="radio" name="type" id="adaptive" checked>
						<label for="adaptive">Адаптивная</label>
						<input type="radio" name="type" id="fixed">
						<label for="fixed">Фиксированная</label>
						<input type="radio" name="type" id="stretch">
						<label...

CSS

html, body{
    padding:0;
    margin:0;
    font-family: 'Roboto', sans-serif;
}

.container {
	width: 900px;
    padding: 0 10px;
    min-height: 110px;
    margin: 0 auto;
}

.clearfix {
	content: '';
	display: table;
	clear: both;
}

/* HEADER */

header {
	min-width: 900px;
	padding-top: 30px;
	background: #eeeeee;
}

.logo {
	float: left;
	width: 140px;
	height: 55px;
	margin-right: 180px;
}

ul.menu {
	margin-top: 10px;
}

.menu {
	float: left;
	padding: 0;
	margin-bottom: 45px;
}

.menu li {
	display: inline-block;
	list-style: none;
	margin-top: 15px;
	margin-right: 40px;
}

.menu a {
	display: block;
	font: 14px/30px 'Roboto', sans-serif;
	font-weight: 500;
	color: #000;
	text-transform: uppercase;
	text-decoration: none;
}

.basket-enter {
	float: right;
	position: relative;
	margin-top: 25px;
	margin-bottom: 10px;
	padding-left: 30px;
	font: 14px/30px 'Roboto', sans-serif;
	font-weight: 500;
	color: #000;
	text-transform: uppercase;
	text-decoration: none;
}

.menu a:hover, .basket-enter:hover {
	color: #fb565a;
}

.menu a:active, .basket-enter:active {
	color: #cbcbcb;
}

li.active { 
    border-bottom: 2px solid #fb565a;
} 


/* HEADER END */

/* SLIDER */

.slider{
    position: relative;
    width: 880px;
    height: 310px;
    margin: 0 auto;
}
.slider input[type=radio] {
    position: absolute;
    opacity: 0;
}
.slider-controls{
    position: absolute;
    bottom: 95px;
    left: 50%;
    width: 200px;
    height: 10px;
    margin-left: -100px;
    text-align: center;
    z-index: 1000;
}
.slider-controls label{
    display: inline-block;
    width: 4px;
    height: 4px;
    margin: 0 3px;
    background: white;
    border: 3px solid white;
    vertical-align: top;
    border-radius: 50%;
    cursor: pointer;
}
#btn-1:checked ~ .slider-controls label[for="btn-1"],
#btn-2:checked ~ .slider-controls label[for="btn-2"],
#btn-3:checked ~ .slider-controls label[for="btn-3"] { 
    background: #c1c1c1;
}
.slide{
    position: absolute;
    top: 0;
  ...

JavaScript

var link = document.querySelector('.send-us-btn');
  var popup = document.querySelector('.write-us');
  var close = popup.querySelector('.write-us-close');
  var form = popup.querySelector('form');
  var login = form.querySelector('.login-field');
  var password = form.querySelector('.email-field');
  var storage = localStorage.getItem('login');

  link.addEventListener('click', function(event) {
    event.preventDefault();
    popup.classList.add('write-us-show');
    if (storage) {
      login.value = storage;
      email.focus();
    } else {
      login.focus();
    }
  }, false);

  close.addEventListener('click', function(event) {
    event.preventDefault();
    popup.classList.remove('write-us-show');
  }, false);

  form.addEventListener('submit', function(event) {
    if (!login.value || !password.value) {
      event.preventDefault();
      popup.classList.add('login-popup-error');
    } else {
      localStorage.setItem('login', login.value);
    }
  }, false);

  window.addEventListener('keydown', function(event) {
    if (event.keyCode == 27 && popup.classList.contains('write-us-show')) {
      popup.classList.remove('write-us-show');
    }
  }, false);