#windrose {
    width: 200px;
    height: 200px;
    border: 1px solid grey;
    border-radius: 80%;
    position: relative;
    margin: 50px;
    text-align: center;
}

#north, #south, #east, #west {
    position: absolute;
    width: 20px;
    height: 20px;
}

#north {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

#south {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

#east {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
}

#west {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}

#arrow {
    width: 1px;
    height: 100px;
    background-color: blue;
    position: absolute;
    bottom: 50%;
    left: 50%;
    transform-origin: 50% 100%;
}

#arrow::after {
    content: '';
    position: absolute;
    bottom: -10px; /* Positioniert die Spitze am Ende des Pfeils */
    left: 50%;
    border: 10px solid transparent;
    border-top-color: blue; /* Farbe der Pfeilspitze */
    transform: translateX(-50%);
}