/* Abschlussbild */
#mainend {
    width: 100%;
    height: auto;
}

footer {
    padding: 5% 5% 0 5%;
}

.footer-link-box {
    display: block; /* Change to block for responsiveness */
    text-align: right;
    width: 100%;
    height: auto; /* Responsive height */
    position: relative;
    overflow: hidden;
}

.footer-link-box-under {
    position: absolute;
    background: linear-gradient(90deg, #12111f, #5ce1e6, #12111f);
    width: 100%;
    height: 100%;
    opacity: 15%;
}

.footer-link-box-content {
    position: absolute;
    width: 100%;
    height: 100%;
}

.footer-link-box-content button {
    border-style: none;
    text-align: center;
    cursor: pointer;
    font-size: 4em;
    font-family: 'Courier New', Courier, monospace;
    background: none;
    width: 100%;
    color: #ffffff;
    z-index: 1;
}