#footer {
    margin-top: 100px;
    background-color: #00adef;
    position: relative;
    padding-bottom: 3rem !important;
    padding-top: 3rem !important;
    position: relative;
}

#footer :before {
    position: absolute;
    content: '';
    width: 100%;
    height: 30px;
    top: -50px;
    left:0;
    background-color: #72d0f6;
}