style5.css

body {
	font-family: Arial, Helvetica, sans-serif;
	margin: 20px;
  }
  
  html {
	box-sizing: border-box;
  }
  
  *, *:before, *:after {
	box-sizing: inherit;
  }
  
  .column {
	margin: 20px;
	float: centre;
	width: 600px;
	height: 50.9px;
	margin-top: 20px;
	
	padding: 2 1px;
  }
  
  .card {
	box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
	margin: 8px;
  }
  
  .about-section {
	padding: 60px;
	text-align: center;
	background-color: #474e5d;
	color: white;
  }
  
  .container {
	padding: 12 18px;
  }
  
  .container::after, .row::after {
  
	content: "";
	clear: both;
	display: flex;
  }
  
  .title {
	color: grey;
  }
  
  .button {
	border: none;
	outline: 0;
	display: inline-block;
	padding: 8px;
	color: white;
	background-color: #000;
	text-align: center;
	cursor: pointer;
	width: 100%;
	height: 50%;
  }
  
  .button:hover {
	background-color: #555;
  }
  
  @media screen and (max-width: 650px) {
	.column {
	  width: 100%;
	  
	  display: block;
	}
  }