style.css

body {
    margin: 0;
    font-family: 'Source Sans Pro', sans-serif;
    user-select: none;
}

hr {
    width: 75%;
}

/* Loading prompt */

#loading-prompt {
    display: flex;
    position: absolute;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
    background-color: #111;
    color: #999;
    font-weight: bold;
    font-family: monospace;
    text-align: center;
    pointer-events: none;
}

#title {
    clip-path: inset(0 3.3ch 0 0);
    animation: l4 1s steps(4) infinite;
    width: 600px;
    height: 100px;
    font-size: 48px;
}

#title:before {
    content: "Downloading tiles...";
}

#subtitle {
    font-size: 24px;
    font-weight: normal;
    margin-top: 10px;
}

@keyframes l4 {
    to { clip-path: inset(0 -1.1ch 0 0); }
}

/* Menu */

#menu-button {
    width: 50px;
    height: 50px;
    position: absolute;
    top: 20px;
    left: 20px;
    border-radius: 25%;
    background-color: #111;
    color: #999;
    border: solid 2px;
}

#menu-button:hover {
    cursor: pointer;
    background-color: #444;
}

.menu-kebab {
    position: absolute;
    width: 29px;
    height: 4px;
    background-color: #999;
    left: 9px;
    border-radius: 25%;
}

#menu {
    width: 200px;
    position: absolute;
    top: 80px;
    left: 20px;
    background-color: #111;
    color: #999;
    border: solid 2px;
}

.menu-element {
    padding: 5px 0 0 5px;
}