.u_social {
    position: fixed;
    top: 50%;
    left: 20px;
    z-index: 9999;
    transform: translate(0, -50%);
    padding: 0px;
    margin: 0px;
    list-style-type: none; }
.u_social li {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    margin-bottom: 5px;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    transition: 0.2s; }
.u_social li:hover {
    transform: scale(1.1); }
@media screen and (max-width: 768px) {
    .u_social {
        top: auto;
        right: 0px;
        text-align: center;
        bottom: 0px;
        width: 100%;
        display: flex;
        justify-content: center;
        transform: translate(0, 0); }
    .u_social li {
        margin-left: 5px; }
}