.about-us {
    background: url(../img/linoza-logo.webp);
    overflow: hidden;
    padding-top: 50px;
    background-position: center center;
    width: 100%;
    background-size: 100%;
    min-height: 100vh;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    padding-bottom: 60px;
}
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30px;
    line-height: 30px;
    background-color: rgba(20, 20, 20, .5);
}
footer a {
    color: inherit;
    font-weight: bold;
    text-decoration: none;
}