html,
body,
canvas {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    -webkit-user-select: none;
    -ms-user-select: none;
    -moz-user-select: none;
    user-select: none;
    overflow: hidden;
}

.draghint {
    display: table;
    box-sizing: border-box;
    border-width: 10px;
    border-style: dashed;
    background-color: white;
    border-color: #ccc;
}

.screen {
    width: 100%;
    height: 100%;
}

.dragtext {
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    color: #999;
}

.menu {
    overflow: scroll;
    height: 100%;
    width: 256pt;
    margin: 0 auto;
}

.hidden {
    display: none;
}

.hover {
    border-color: #333;
}

.chooser {
    position: fixed;
    top: -1000px;
}

.message {
    text-align: center;
}

.message h1,
.message p {
    position: relative;
    top: 50%;
    transform: translateY(-50%);
}

.overlay {
    opacity: .5;
}