Template:Round button/styles.css

.tpl-round-button {
    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 {
    width: 68px;
    height: 68px;
    padding: 15px;
}