* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body {
    background-color: cornflowerblue;
    color: #ee8;
    font-size: 20pt;
}

#header {
    display: flex;
    justify-content: space-around;
    padding: 0.5em;
}

#footer {
    margin-top: auto;
    height: 2em;
    background-color: black;
}

#content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100vw;
    min-height: calc(100vh - 1em - 20pt);
}

#upper-layer {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

#canvas {
    z-index: 1;
}

.unselectable {
    user-select: none;
    pointer-events: none;
}

#new-game {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#new-game h1 {
    margin-bottom: 1em;
    width: 50%;
    text-align: center;
}

#new-game-button {
    z-index: 2;
    border: 5px solid darkcyan;
    color: darkcyan;
    font-weight: 600;
    font-size: 30pt;
    padding: 0.5em 1em;
}