body {
    font-family: 'Helvetica Neue', Arial;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}
ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: flex-end;
    background-color: #333;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}
li {
    padding: 15px 25px;
}
a {
    text-decoration: none;
    color: #ffffff;
    font-size: 18px;
    font-weight: bold;
    text-transform: uppercase;
    display: block;
}
a:hover {
    color: #f39c12;
    background-color: #444;
    border-radius: 5px;
}
h1 {
    margin-top: 30px;
    text-align: center;
    font-family: 'Helvetica Neue', Arial;
    color: #333333;
    font-size: 36px;
}
.container {
    padding: 20px;
}