body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;  
    justify-content: center; 
    height: 100vh;
    margin: 0;
    background: linear-gradient(to bottom, #f0f8ff, #e6f7ff); 
    text-align: center;
}

header {
    color: white;
    padding: 20px 0;
    width: 100%;
}

h1 {
    color: black;
}

h2 {
    color: DarkMagenta;
}

h3 {
    color: FireBrick;
}

main {
    padding: 20px;
}

footer {
    color: white;
    padding: 20px 0;
    width: 100%;
}


ul.nav {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #000;
    width: 100%;
    position: fixed; 
    top: 0; 
    left: 0; 
}

li.nav {
    float: left;
    border-right: 1px solid #bbb;
}

li.nav a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li.nav a:hover:not(.active) {
    background-color: #1a18eb;
}

#controls {
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#viewingArea {
    width: 75vw;
    height: 75vh;
    background-color: black;
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.button {
    position: absolute;
    padding: 10px;
    border: none;
    cursor: pointer;
    color: black;
    font-weight: bold;
}

li.norm {
}

ul.norm {
}