/* ===== Grundgerüst für style.css ===== */

/* Box-Modell und Standard-Stile*/
* {
    margin: 100;
    padding: 50;
    box-sizing: border-box;
}

/* Standard-Schriftart und Hintergrund */
body {
    font-family: georgia;
    line-height: 1.6;
    color: #333;
    background-image: url('https://fraudingdong.neocities.org/Bilder/wm.jpg'); 
    background-repeat: repeat;
}

/* Überschriften */
h1, h2, h3, h4, h5, h6 {
    font-weight: bold;
    margin-bottom: 0.5em;
}

/* Links */
 /* unvisited link */
a:link {
  color: #c54626;
}

/* visited link */
a:visited {
  color: #9bc9bf;
}

/* mouse over link */
a:hover {
  color: blue;
}

/* selected link */
a:active {
  color: blue;
} 
/* Listen */
ul, ol {
    margin: 1em 0;
    padding-left: 2em;
}

.meinBild {
        width: 100%;
        height: auto;
      
    }
  <style>
    body {
      margin: 0;
      font-family: Georgia;
    }

    .container {
      display: grid;
      grid-template-columns: 250px 1fr 250px; /* links - mitte - rechts */
      gap: 20px;
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    header {
      grid-column: 1 / -1; /* Header über alle Spalten */
      background: #9bc9bf;
      padding: 20px;
      text-align: center;
    }

    nav {
      background: #e9e5da;
      padding: 15px;
      border-radius: 8px;
    }

    nav section {
      margin-bottom: 20px;
    }

    main {
      background: #e9e5da;
      padding: 15px;
      border-radius: 8px;
    }

    aside.about {
      background: #e9e5da;
      padding: 15px;
      border-radius: 8px;
    }

    footer {
      grid-column: 1 / -1;
      text-align: center;
      padding: 10px;
      background: #eee;
      margin-top: 20px;
    }

    @media (max-width: 900px) {
      .container {
        grid-template-columns: 1fr; /* alles untereinander */
      }
    }


/* Medienabfragen für Responsive Design */
@media (max-width: 768px) {
    .container {
        width: 95%;
    }
}