body {
    background-color: #212121;
    color: #fff;
    overflow: hidden;
}

.center {
    display: flex;
    height: 100vh;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

#clock {
    font-size: 100px;
    min-width: 9rem;
    background-color: orange;
    padding: 40px 50px;
    margin-top: 20px;
    border-radius: 10px;
}
#banner{
    font-size: 50px;
}

nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    gap: 0.5rem;
    border-bottom: solid 1px #aaa;
    background-color: #eee;
    margin-bottom: 20px;
}

nav a {
    display: inline-block;
    min-width: 9rem;
    padding: 0.5rem;
    border-radius: 0.2rem;
    border: solid 1px rgb(0, 0, 0);
    text-align: center;
    text-decoration: none;
    color: #1b1b1b;
}

.home {
    color: #000;
    background-color: #d4d4d4;
}