.img-fluid {
    height: 500px;
}
.icons img{
	width:75px;
	height:75px;
}
.how_to_image {
	display: block;
	width: 50%;
	margin: 1em auto;
	border: 1px solid black;
	padding: 1em white;
}
.code {
	margin: 1em;
	border: 1px solid black;
	padding: 1em;
}
.how_to_header {
	width: 100%;
}