.scroll-top-wrap {
    text-align: center;
}

.scroll-top-inner {
    z-index: 9999;
    border-radius: 4px;
    -moz-border-radius: 4px;
    -webkit-border-radius: 4px;
    opacity: 0.5;
    width: 50px;
    height: 50px;
    display: inline;
    position: fixed;
    cursor: pointer;
    margin: 0 auto;
    right: 7px;
    bottom: 50px;
    background: #000;
    border: 1px solid #fff;
}

.scroll-top-inner.lightScheme {
    background: #fff;
    border: 1px solid #000;
}

.scroll-top-inner.small {
    width: 25px;
    height: 25px;
}

.scroll-top-inner span {
    font-family: Arial sans-serif;
    font-weight: bold;
    line-height: 50px;
    text-align: center;
    font-size: 35px;
    position: relative;
    right: 1px;
    color: #fff;
}

.scroll-top-inner span.lightScheme {
    color: #000;
}

.scroll-top-inner span.small {
    font-size: 17px;
    line-height: 25px;
}