body {
    background-color: rgb(190, 203, 252);
}

.katenfoo{

    background: #192dff;
    background: linear-gradient(81deg, rgba(25, 45, 255, 1) 0%, rgba(255, 255, 255, 1) 100%, rgba(255, 255, 255, 0.58) 10%);
}