body{
    background-color: #23272a;
    max-width: 880px;
    margin: auto;
    color: white;
}

h1 {
    text-align: center;
    font-size: 60px;
}

a:hover {
    color: #16e0b8;
}

a:visited {
    color: #fcb6b6;
}
.grid-container {
    display: grid;
    grid-template-columns: auto auto auto auto;
    grid-gap: 30px;
    padding: 10px;
    background-color: #23272a;
    align-items: stretch;
}

.grid-item div {
    display: table-cell;
    border: 1px solid #ccc;
    font-size: 48px;
    box-shadow: 2px 2px 6px 0px rgba(0, 0, 0, 0.2);
    max-width: 100%;
    width: 215px;
    height: 200px;
    margin: auto;
    text-align: center;
    line-height: 200px;
    background-color: #2c2f33;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    grid-gap: 20px;
    align-items: stretch;
    max-width: 500px;
    margin: auto;
}

.grid div {
    display: table-cell;
    border: 3px solid #ccc;
    font-size: 16px;
    box-shadow: 2px 2px 6px 0px rgba(0, 0, 0, 0.5);
    max-width: 100%;
    width: 200px;
    height: 100px;
    margin: center;
    text-align: center;
    padding: 10px;
    align-items: center;
    font-size: 20px;
    font-family: Helvetica;
    font-weight: bold;
    background-color: #2c2f33;
}

div.Fach {
    display: table-cell;
    border: 3px solid #ccc;
    font-size: 16px;
    box-shadow: 2px 2px 6px 0px rgba(0, 0, 0, 0.5);
    max-width: 100%;
    width: 200px;
    height: 100px;
    margin: center;
    text-align: center;
    padding: 10px;
    align-items: center;
    font-size: 20px;
    font-family: Helvetica;
    font-weight: bold;
    background-color: #081B33;
}