style.css

#shareBox {
	width: 30px;
	height: 30px;
	position: absolute;
}
#shareBox > button {
	width: 100%;
	height: 100%;
	border-radius: 2px;
	border: none;
	outline: none;
	background-color: #292A2B;
	background-image: url('twitter.png');
	background-repeat: no-repeat;
	background-position: center;
	background-size: 70%;
	cursor: pointer;
}
#shareBox > button::after {
	position: absolute;
	content: '';
	border-top: 10px solid black;
	border-left:10px solid transparent;
	border-right: 10px solid transparent;
	left: 5px;
	top: 30px;	
}
article{
	width: 400px;
	margin: auto;
	font-size: 14pt;
}
h1,
h3{
	text-align: center;
}
h3{
	background-color: #FF0A68;
	color: white;
	text-shadow: 1px 1px 1px black;
	padding: 2px 0;
	box-shadow: inset 0 0 2px  grey;
}
body{
	font-family: 'crimson text';
}
.btn {
	background-color: #343436;
	background-image: linear-gradient(to bottom,#555 0,#444 100%);
	border-radius: 3px;
	color: white;
	padding: 4px 6px 4px 6px;
	text-shadow: 0 4px 0 #000;
	box-shadow: inset #000 0 0 2px;
}