.about{
width: 100%;
height: 240vh;
padding: 50px;
}
.about .box{
width: 100%;
padding: 60px 0;
display: flex;
align-items: center;
justify-content: center;
}
/*Gray box*/
.about .box .card{
width: 170px;
height: auto;
padding: 5px 10px;
margin: 0 15px;
background: gainsboro;
border: 1px solid gainsboro;
cursor: pointer;
z-index: 1;
transition: 0.3s;
}
.about .box .card:hover{
box-shadow: 3px 5px 20px rgba(0,0,0,0.3);
transform: scale(1.1);
border-radius: 5px;
}
.about .box .card img{
width: 150px;
}
.about hr{
height: 2px;
background: #4169e1;
border-radius: 5px;
margin: 30px 110px;
}
.about .Clotches h1{
font-size: 70px;
display: flex;
justify-content: center;
align-items: center;
margin: 35px 0;
}
*{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: sans-serif;
}
section{
width: 100%;
height: 100vh;
}
section header{
display: flex;
align-items: center;
justify-content: space-around;
box-shadow: 0 0 20px rgba(0,0,0,0.3);
}
section header .logo{
font-size: 30px;
color: black;
text-decoration: none;
font-weight: bold;
margin: 15px 0;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Art Case Store</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<section>
<header>
<div class="circle"></div>
<div class="circles"></div>
<a href="#" calss="logo">Art<span>Case</span><span>Store</span></a>
<ul>
<li><a href="#">Главная</a></li>
<li><a href="#">Товары</a></li>
<li><a href="#">Категории</a></li>
<li><a href="#">Новости</a></li>
<li><a href="#">Контакты</a></li>
</ul>
<p>Войти</p>
</header>
</section>
</body>
</html>