body {
        font-family: Arial, sans-serif;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        background-color: #f4f4f4;
    }

    .login-container {
        background-color: white;
        padding: 20px;
        border-radius: 8px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        width: 300px;
    }

    h2 {
        text-align: center;
    }

    .form-group {
        margin-bottom: 15px;
    }

    input {
        width: 100%;
        padding: 10px;
        font-size: 14px;
        border: 1px solid #ddd;
        border-radius: 4px;
    }

    button {
        width: 100%;
        padding: 10px;
        font-size: 16px;
        background-color: #4CAF50;
        color: white;
        border: none;
        border-radius: 4px;
        cursor: pointer;
    }

    button:hover {
        background-color: #45a049;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    
    body {
        font-family: Arial, sans-serif;
        background-color: #f4f7fa;
        color: #333;
    }
    
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }
    
    .header {
        text-align: center;
        margin-bottom: 20px;
    }
    
    .header h1 {
        font-size: 2.5rem;
        margin-bottom: 10px;
    }
    
    .header .btn {
        padding: 10px 20px;
        background-color: #007bff;
        color: white;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: background-color 0.3s;
    }
    
    .header .btn:hover {
        background-color: #0056b3;
    }
    
    .student-list {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 20px;
        margin-top: 30px;
    }
    
    .student-card {
        background-color: white;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        padding: 20px;
        text-align: center;
        transition: transform 0.3s, box-shadow 0.3s;
    }
    
    .student-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    }
    
    .student-card h3 {
        font-size: 1.5rem;
        color: #333;
        margin-bottom: 10px;
    }
    
    .student-card p {
        font-size: 1rem;
        color: #555;
        margin-bottom: 10px;
    }
    
    .student-card .email,
    .student-card .phone {
        color: #777;
    }