/* Основные стили */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    margin-top: 90px;
    padding: 20px;
    background: #f4f4f9;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 28px;
    color: #333;
}

.container_tests {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.test-list {
    list-style: none;
    padding: 0;
}

.test-list li {
    margin-bottom: 20px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #f4f4f4;
    transition: background-color 0.3s;
}

.test-list li:hover {
    background-color: #e9e9e9;
}

.test-list a {
    text-decoration: none;
    color: #20509b;
    font-size: 20px;
    font-weight: bold;
    transition: color 0.3s;
}

.test-list a:hover {
    color: #003366;
}

.test-list p {
    margin-top: 10px;
    font-size: 16px;
    color: #666;
}

/* Медиа-запросы для планшетов */
@media screen and (max-width: 768px) {
    h1 {
        font-size: 24px;
    }

    .test-list a {
        font-size: 18px;
    }

    .test-list p {
        font-size: 14px;
    }
}

/* Медиа-запросы для мобильных устройств */
@media screen and (max-width: 480px) {
    h1 {
        font-size: 20px;
    }

    .test-list a {
        font-size: 16px;
    }

    .test-list p {
        font-size: 12px;
    }
}