* {
    box-sizing: border-box;
}

    body {
        margin: 0;
        font-family: Arial, sans-serif;
        background-color: #f0f8f1;
        color: #26352a;
}

/* Kop  fbereich */

        header {
        background-color: #176b3a;
        color: white;

        text-align:     center;
        padding: 35px 20px;
}

    header h1 {
        font-size: 38px;
        margin: 0;
}

    header  p {
        margin-bottom:          0;
}

    /* Navigation */

    nav {
        background-color: #238b4b;
        padding: 16px;
        text-align: center;
}

        nav a {
            color: white;
        text-decoration: none;
        margin: 0 15px;
        font-weight: bolder;
}


    nav a:hover {
        color: #d3ffdf;
}

/* Hauptinhalt */

        main {
            max-width: 1100px;
            margin: auto;
            padding: 40px 20px;
            text-align: center;
}

    h2 {            color: #176b3a;
        margin-bottom: 20px;
}
    /* Vier Karten nebeneinander     */

        .karten {
        display: flex;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
        margin:     40px auto 60px;
}

    .karte {
        background-color: white;
        border: 2px solid #b6dfc2;
        border-radius: 14px;
        padding: 25px 15px;
        width: 235px;
        text-align:  center;
        box-shadow:     0 4px 12px #00000012;
}

    karte:hover {
        border-color: #238b4b;
}

    symbol {
        font-size: 48px;
        margin-bottom: 15px;
}

    .karte h3 {
        color: #176b3a;
}

    .karte p {
        min-height: 45px;
}

    .karte a {
        display: inline-block;
        background-color: #238b4b;
        color: white;
        text-decoration: none;
        padding: 11px 16px;
        border-radius: 7px;
}

.karte a:hover {
    background-color: #145c31;
}

/* Tabelle unter den Karten */

table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    margin-top: 25px;
}

th {
    background-color: #176b3a;
    color: white;
    padding: 16px;
}

td {
    padding: 18px;
    border: 1px solid #c8dfce;
    text-align: center;
}

tr:nth-child(odd) {
    background-color: #e5f4e9;
}

.tabellenbild {
    font-size: 38px;
}

/* Fussbereich */

footer {
    background-color: #176b3a;
    color: white;
    text-align: center;
    padding: 20px;
}

/* Smartphone */

@media (max-width: 600px) {

    nav a {
        display: block;
        margin: 12px;
    }

    .karten {
        flex-direction: column;
        align-items: center;
    }

    .karte {
        width: 100%;
        max-width: 350px;
    }

    table {
        font-size: 13px;
    }

    td, th {
        padding: 10px;
    }

    .tabellenbild {
        font-size: 25px;
    }
}