body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: rgba(168, 130, 130, 0.133);
    color: #363434;
}

header {
            background-color: #dcdcdc;
            color: rgb(13, 13, 13);
            padding: 20px;
            text-align: center;
        }

header nav a {
    color: #0a0a0a;
    margin: 0 10px;
    text-decoration: none;
    font-weight: bold;
}

section {
    padding: 40px;
    background: #c08b8b;
    margin: 20px;
    border-radius: 8px;
}

footer {
    text-align: center;
    padding: 20px;
    background: #313131;
    color: #ffffff;
}
.button {
    display: inline-block;
    padding: 12px 20px;
    background-color: #777e56;  /* für alle Button */
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: bold;
}   
/* überstreichen */
.button:hover {
    background-color: #e7ae20;
}
.button.about-button {
    background-color: #a1a68c;  /* nur für die Button's in der about Box (gleiche HG Farbe) */
}
.button.about-button:hover {
    background-color: #e7ae20;
}
.back-button {
    position: fixed;        /* ← DAS ist der entscheidende Punkt */
    top: 71px;              /* Abstand vom oberen Bildschirmrand */
    right: 15px;
    z-index: 1000;

    display: inline-block;
    padding: 12px 18px;
    background-color: #777e56;
    color: #ffffff;
    text-decoration: none;   /* WICHTIG */
    border-radius: 8px;
    font-weight: bold;
}

.back-button:hover {
    background-color: #e7ae20;
}