.pagetop {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 15px;
    z-index: 2000;
}

.pagetop a {
    border-radius: 30px;
    display: block;
    line-height: 1;
    background-color: #aaa;
    text-align: center;
    color: #666;
    font-size: 20px;
    text-decoration: none;
    padding: 10px 10px;
    filter: alpha(opacity=85);
    -moz-opacity: 0.85;
    opacity: 0.85;
}

.pagetop a:hover {
    filter: alpha(opacity=85);
    -moz-opacity: 0.85;
    opacity: 0.85;
}