#pagetop a {

    background-color: #F27F23;

    color: #fff;

    display: inline-block;

    position: relative;

    width: 47px;

    height: 47px;

    z-index: 999;

}



#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;

}



@media screen and (max-width:624px) {

    #pagetop a {

        width: 43px;

        height: 43px;

    }

}