.maincontent {
    max-width: 100%;
    padding: 50px 0;
    text-align: center;
    background-image: linear-gradient(0deg,rgba(255, 255, 255, 0) 25%, rgba(255, 255, 255, 1) 100%), url(/imageserver/Textures/BG3.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}