```css
/* ===========================
   🌸 Digitales Schul-Handbuch
   style.css
=========================== */

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{

    background:#FFFDF8;

    color:#444;

    font-family:Arial, Helvetica, sans-serif;

    line-height:1.7;

}

/* ---------- Header ---------- */

header{

    background:#FFD9E8;

    text-align:center;

    padding:50px 20px;

    border-bottom:6px solid #D6E7D5;

}

header h1{

    font-size:40px;

    margin-bottom:10px;

}

header p{

    font-size:18px;

}

/* ---------- Navigation ---------- */

nav{

    background:#D6E7D5;

    display:flex;

    justify-content:center;

    flex-wrap:wrap;

    padding:15px;

}

nav a{

    text-decoration:none;

    color:#444;

    background:white;

    padding:10px 18px;

    margin:6px;

    border-radius:20px;

    transition:0.3s;

    font-weight:bold;

}

nav a:hover{

    background:#FFD9E8;

    transform:translateY(-2px);

}

/* ---------- Hauptbereich ---------- */

main{

    width:90%;

    max-width:1100px;

    margin:auto;

    padding:30px 0;

}

/* ---------- Karten ---------- */

.card{

    background:white;

    padding:25px;

    margin-bottom:25px;

    border-radius:18px;

    box-shadow:0 8px 18px rgba(0,0,0,0.08);

}

.card h2{

    margin-bottom:15px;

    color:#D36B9A;

}

/* ---------- Listen ---------- */

ul{

    padding-left:20px;

}

li{

    margin-bottom:10px;

}

/* ---------- Checkboxen ---------- */

input[type="checkbox"]{

    margin-right:10px;

    transform:scale(1.2);

}

/* ---------- Zitat ---------- */

blockquote{

    background:#FDF2F7;

    border-left:6px solid #FFD9E8;

    padding:20px;

    border-radius:10px;

    font-style:italic;

}

/* ---------- Footer ---------- */

footer{

    text-align:center;

    background:#FFD9E8;

    padding:25px;

    margin-top:40px;

}

/* ---------- Buttons ---------- */

button{

    background:#FFD9E8;

    border:none;

    padding:10px 18px;

    border-radius:12px;

    cursor:pointer;

}

button:hover{

    background:#D6E7D5;

}

/* ---------- Tabellen ---------- */

table{

    width:100%;

    border-collapse:collapse;

}

th{

    background:#FFD9E8;

}

td,th{

    padding:10px;

    border:1px solid #ddd;

}

/* ---------- Bilder ---------- */

img{

    max-width:100%;

    border-radius:15px;

}

/* ---------- Handy ---------- */

@media(max-width:700px){

header h1{

font-size:30px;

}

nav{

flex-direction:column;

align-items:center;

}

nav a{

width:90%;

text-align:center;

}

main{

width:95%;

}

}
```