* {
    margin: 0;
    padding: 0;
}
html {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #1f1f1f;
    color: white;
}
body {
    padding: 50px min(5%, 50px);
    display: flex;
    flex-direction: column;
    gap: 50px;
    align-items: center;
    height: 100%;
}
h1 {
    text-align: center;
    text-decoration: underline;
    font-size: 2rem;
    margin-bottom: 20px;
}
ul {
    columns: 3 auto;
    column-gap: 30px;
    list-style: none;
    padding: 0;
    text-align: center;
}
a {
    color: white;
    text-decoration: none;
    &:hover {
        opacity: 0.5;
    }
}
span {
    display: block;
    width: 10px;
    height: 10px;
    border-radius: 100%;
}
button {
    border: none;
    background-color: black;
    color: white;
    padding: 10px 15px;
    border-radius: 1000px;
    cursor: pointer;
    align-self: center;

    &:hover {
        background-color: white;
        a {
            color: black;
            opacity: 1;
        }
    }
}
section {
    display: flex;
    flex-direction: column;
    text-align: center;
    gap: 1rem;
}
#schüler ul {
    gap: 50px;
    align-items: center;
    height: 100%;
    line-height: 40px;
    li {
        padding: 10px 0;
        break-inside: avoid;
    }
}
#klassen ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

@media(max-width: 600px) {
    ul {
        columns: 2 auto;
    }
}
@media(max-width: 400px) {
    ul {
        columns: 1 auto;
    }
}