#mts-button-gruppe {
    display: block;
    position: fixed;
    z-index: 9999;
    top: 25%;
    right: 0;
}
#mts-button-1 {
    width: 106px;
    height: 112px;
    border: 0;
    outline: 0 !important;
    vertical-align: middle;
    transform: translateY(-100%);
    cursor:pointer;
    opacity: 0.5;
}
#mts-button-1:hover {
    opacity: 1;
}
#mts-button-2 {
    width: 106px;
    height: 112px;
    border: 0;
    outline: 0 !important;
    vertical-align: middle;
    transform: translateY(-100%);
    cursor:pointer;
    opacity: 0.5;
    }
#mts-button-2:hover {
    opacity: 1;
}
@media (max-width: 800px) {
    #mts-button-2 {
        width: 53px;
        height: 56px;
        opacity: 1;
    }
    #mts-button-1 {
        width: 53px;
        height: 56px;
        opacity: 1;
    }
}