.header-image {
    width: 30%;
    height: auto;
    display: block;
    margin-bottom: 20px;
    border-radius: 10px;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 20px;
}

h1, h2, h3 {
    color: #0056b3;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

a {
    color: #0056b3;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    margin: 10px 0;
}

button {
    background-color: #0056b3;
    color: #fff;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background-color: #004494;
}