<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<link rel="stylesheet" href="test.css">
</head>
<body>
<div class="third-block">
<div class="white-block">
</div>
<div class="black-block">
</div>
</div>
</body>
</html>
.white-block{
height: 1037px;
width: 664px;
background-color: #FFFFFF;
align-self: center;
}
.third-block{
height: 1277px;
width: 100%;
margin-bottom: 220px;
background-color: #E9E9E3;
display:flex;
justify-content: flex-end;
}
.black-block{
height: 1037px;
width: 664px;
background-color: #000000;
align-self: center;
}