body {
    background-image: linear-gradient(to top, #003260bd, #00326051), url("../../images/studierende.png");
    
    height: 100%;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.wrapper {
    position: fixed;
    width: 60%;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    border-radius: 10px;
}

.wrapper:before, .wrapper:after{
    box-shadow: none;
}

.wrapper .inner{
    width: 100%;
    padding: 3em 3em 1em 3em;
}