.containerrr {
    font-family: 'Open Sans', sans-serif;
    margin: 20px auto;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 620px;
    width: 100%;
}

h1 {
    color: #007BFF;
    margin-bottom: 10px;
}

h2 {
    color: #007BFF;
    margin-bottom: 15px;
}

ul {
    list-style: none;
    padding: 0;
    text-align: left;
}

li {
    margin-bottom: 10px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 5px;
    transition: 0.3s;
}

li:hover {
    background: #e9ecef;
}

a {
    text-decoration: none;
    color: #007BFF;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}