JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>

<html lang="ru">

<head>

<meta charset="UTF-8">

<title>Document</title>

<meta name="description" content="Киномонстр- это портал о кино">

<meta name="keywords" content="фильмы, фильмы онлаин, hd" />

<link rel="stylesheet" href="assets/css/style.css">

</head>

<body>

 

<div class="main">

 

 <div class="header">

    <div class="logo">

    <div class="logo_text">

    <h1><a href="/">КиноМонстр</a></h1>

    <h2>Кино - наша страсть!</h2>

    </div>

    </div>

    <div class="menubar">

   

       <ul class="menu">

          <li class="selected"><a href="#">Главная</a></li>

          <li><a href="#">Фильмы</a></li>

          <li><a href="#">Сериалы</a></li>

          <li><a href="#">Рейтинг фильмов</a></li>

          <li><a href="#">Контакты</a></li>

       </ul>

 

    </div>

 

 </div>

 

 </div>

 

 <div class="site_content">

  

     <div class="sidebar_container">

          <div class="sidebar">

             <h2>Поиск</h2>

               <form method="post" action="#" id="search_form" >

                     <input type="search" name="search_field" placeholder="ваш запрос" />

                     <input type="submit" class="btn" value="найти" />

               </form> 

             </div>

 

             <div class="sidebar">

               <h2>Вход</h2>

               <form method="post" action="#" id="login">

                 

                 <input type="text" name="login_field" placeholder="логин" />

                 <input type="password" name="password_field" placeholder="пароль" />

                 <input type="submit" class="btn" value="вход" />

                 <div class="lables_passreg_text">

                     <span><a href="#">забыли пароль?</a></span> | <span><a href="#">регистрация</a></span>

                 </div>

               </form>

             </div>

 

             <div class="sidebar">

               <h2>Новости</h2>

               <span>10.01.2018</span>

              ...

CSS

* {
  margin: 0;
  padding: 0;
}

body {
  font-size: 1.2em;
  background-color: #fff;
  color: #555;
}

p {
  padding: 0 0 20px 0;
  line-height: 1.7em;
}

input[type="text"], input[type="password"], input[type="search"] {
  color: #5d5d5d;
  width: 60%;
  padding: 8px;
} 

input, textarea {
  outline: none;
  border: none;
  border: solid 1px #f2f2f2;
}

h1, h2 {
  font: normal 170% 'century gothic', arial;
  margin: 0 0 15px 0;
  padding: 15px 0 5px 0;
  color: #000;
}

h2 {
  font-size: 140%;
}

a, a:hover {
  outline: none;
  text-decoration: underline;
  color: #aeb002;
}

ul {
  margin: 2px 0 22px 17px;
}

ul li {
  margin: 0 0 6px 0;
  padding: 0 0 4px 5px;
  line-height: 1.5em;
}


.header {
  background-color: darkslateblue;
  height: 177px;
  font-size: 0.8em;
  margin-left: 0px;
  margin-right: 0px;
  min-width: 900px;
}

.main, .logo, .menubar, .site_content, .footer {
  margin-left: auto;
  margin-right: auto;
}

.logo {
  width: 880px;
  padding-bottom: 40px;
}

.logo h1, .logo h2 {
  font: normal 300% 'century gothic', arial, sans-serif;
  margin: 0 0 0 9px;
}

.logo_text h1, .logo_text h1 a, .logo_text h1 a:hover {
  padding: 22px 0 0 0;
  color: #fff;
  letter-spacing: 0.1em;
  text-decoration: none;
}

.logo_text h2 {
  font-size: 0.9em;
  padding: 4px 0 0 0;
  color: #999;
}

.menubar {
  width: 900px;
  height: 46px;
}

ul.menu {
  float: right;
}

ul.menu li {
  float: left;
  padding: 0 0 0 9px;
  list-style: none;
  margin: 1px 2px 0 0;
}

ul.menu li a {
  font: normal 100% 'trebuchet ms', sans-serif;
  display: block;
  height: 20px;
  padding: 6px 35px 5px 28px;
  color: #fff;
  text-decoration: none;
}

ul.menu li.selected a {
  color: #aeb002;
}

ul.menu li a:hover {
  color: #e4ec04;
}

hr {
  border: solid 1px #f3f3f3;
}

.site_content {
  width: 880px;
  overflow:hidden;
  margin: 20px auto 0 auto;
  background-color: white;
}

.sidebar_container {
  float: right;;
  width: 224px;
}

.sidebar {
  float: right;
  width: 222px;
 ...