Template:Round button/styles.css
.tpl-round-button a {
display: inline-block;
border-radius: 50%;
color: #ffffff;
width: 54px;
height: 54px;
padding: 12px;
margin-right: 0.5em;
margin-bottom: 0.5em;
text-align: center;
background-color: #53946b;
}
.tpl-round-button-large a {
width: 68px;
height: 68px;
padding: 15px;
}
.tpl-round-button-large a:hover {
opacity: 0.8;
}