body {
    background-color: black;
}

.header {
    position: absolute;
    top: 0;
    width: 100%;
    height: 60px;
}

h1 {
    text-align: center;
    color: white;
    font-family: 'Times New Roman', Times, serif
}

h4 {
    text-align: center;
    color: white;
    font-family: 'Times New Roman', Times, serif
}

#cover {
    position: absolute;
    top: 0px;
    right: 0px;
    left: 0px;
    bottom: 0px;
    background-color: black;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3em;
    font-family: 'Times New Roman', Times, serif;
    transition: opacity 15.1s;
}

.footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 40px;
}

model-viewer {
    width: 100vw;
    height: 100vh;
}