.follow-us li {
    float:left;
    list-style: none;
    margin-left:10px;
}
.follow-us li:first-child {
    margin-left:0;
}
.follow-us li a {
    display:block;
    font-size:15px;
    background: #FFF;
    border-radius: 100%;
    padding-top: 20%;
    text-align: center;
    width: 40px;
    height: 40px;
}
.follow-us li a {
    text-decoration: none;
}
.follow-us li a i {
    color: #999999; /*rgb(153, 153, 153)*/
    font-size: 22px;
    margin: 0;
}
.follow-us li a:hover i {
    color: rgba(153, 153, 153, 0.8);
}

@media only screen and (max-width: 1200px) {
    .follow-us li a {
        width: 30px;
        height: 30px;
        padding-top: 15%;
    }

    .follow-us li a i {
        font-size: 15px;
    }
}