#pagetop {
    z-index: 999;
}

#pagetop a {
    background-color: #22801A;
    color: #fff;
    display: inline-block;
    position: relative;
    width: 49px;
    height: 49px;
}

#pagetop a::after{
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
    content: "";
}

#pagetop a::before {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
    content: "";
    width: 10px;
    height: 10px;
    border-top: 2px solid #fff;
    border-right: 2px solid #fff;
    -webkit-transform: rotate(-45deg);
    transform: rotate(-45deg);
}

#pagetop a:hover {
    opacity: 0.7;
}