<!DOCTYPE html>
<html lang="de">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Course Website</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
        }

        /* Navigation Bar */
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
            background-color: #f8f9fa;
            border-bottom: 1px solid #ddd;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
        }

        .account-btn {
            padding: 0.5rem 1rem;
            border: 1px solid #ddd;
            border-radius: 20px;
            text-decoration: none;
            color: #000;
        }

        /* Main Content */
        .main-content {
            display: grid;
            grid-template-columns: 1fr 1px 1fr; /* Drei Spalten: links, Trennlinie, rechts */
            gap: 2rem;
            padding: 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        /* Vertikale Trennlinie */
        .divider {
            background-color: #2b2b2b; /* Dunklere Farbe für bessere Sichtbarkeit */
            width: 4px; /* Etwas breiter */
            height: 100%;
            margin: 0; /* Entfernt die seitlichen Abstände */
        }

        /* Linke Spalte */
        .left-column {
            display: flex;
            width: 350px;
            height: 100%;
            flex-direction: column;
            gap: 2rem;
            padding: 2rem;
            background-color: #f8f9fa; /* Leicht grauer Hintergrund */
        }

        /* Rechte Spalte */
        .right-column {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem;
            gap: 2rem;
            background-color: #f8f9fa;
        }

        .box {
            border: 1px solid #ddd;
            padding: 1.5rem;
            border-radius: 5px;
            text-align: center;
            min-height: 100px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: white;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            width: 100%;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            
            .divider {
                display: none;
            }
            
            .left-column, .right-column {
                padding: 0;
            }
        }
    </style>
</head>
<body>
    <nav class="navbar">
        <div class="logo">LOGO</div>
        <div class="nav-dots">
            <h1>HOME</h1>
        </div>
        <a href="#" class="account-btn">Account</a>
    </nav>
    <main class="main-content">
        <div class="left-column">
            <div class="box">
                <h2>ADD Course</h2>
            </div>
            <div class="box">
                <h2>Cosmetic Shop</h2>
            </div>
        </div>
        
        <div class="divider"></div>
        
        <div class="right-column">
            <div class="box">
                <h2>Prog 1</h2>
            </div>
            <div class="box">
                <h2>Prog 2</h2>
            </div>
        </div>
    </main>
</body>
</html>