.sidebar_nav {
    position: sticky;
    top: 50px;
    left: calc(80% - 200px);
    width: 350px;
    z-index: 100;
    border: 1px solid black;
    background-color: rgba(255, 255, 255);
    color: #777777;
    font-size: 12px;
    border-radius: 10px;
    margin-top: 0px;
}

.gespreis {
    border-top: 1px solid rgba(119, 119, 119, 0.32);
    padding-top: 10px;
    margin-top: 10px;
    color: black;
}

@media (max-width: 640px) {
    .sidebar_nav {
        position: relative;
        top: 0;
        left: 0;
        width: 95%;
        margin: auto;
    }
}