@keyframes menuFadeIn {
    from { width: 96px; }
    to { width: 512px; }
}

body {
    padding: 0;
    margin: 0;
    overflow: hidden;
}

#level {
    border-spacing: 0;
    border-collapse: collapse;
}

#mainbar {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 32px;
    background-color: #cccccc;
    box-shadow: 0 0 20px black;
}

.menu-group {
    position: relative;
    display: inline-block;
    cursor: pointer;
    padding: 5px 20px;
    overflow: visible;
    font-family: sans-serif;
}

.menu-group:hover {
    background-color: #5555cc;
}

.menu-dropdown {
    display: none;
    position: absolute;
    top: 16px;
    left: 0;
    background-color: #cccccc;
    list-style: none;
    box-shadow: 10px 10px 10px rgba(0, 0, 0, 0.5);
    padding-left: 0;
}

.menu-dropdown > li {
    padding: 5px 20px;
    width: 180px;
}

.menu-dropdown > li:hover {
    background-color: #5555cc;
}

.menu-group:hover > .menu-dropdown {
    display: block;
}

#menu {
    position: fixed;
    display: flex;
    flex-flow: wrap row;
    top: 32px;
    left: 0;
    bottom: 0;
    padding-top: 20px;
    width: 96px;
    overflow: hidden;
    background-color: #cccccc;
    box-shadow: 0 0 20px black;
}

#menu:hover {
    animation-name: menuFadeIn;
    animation-duration: 0.5s;
    width: 512px;
}

#map {
    position: fixed;
    top: 32px;
    left: 96px;
    right: 0;
    bottom: 0;
    overflow: scroll;
    background-color: black;
}

.field, .button-tile {
    border: 0;
    padding: 0;
    margin: 0;
    background-repeat: no-repeat;
    cursor: pointer;
    display: inline-flex;
}

.selection {
    width: 100%;
    height: 100%;
    opacity: 0;
    background-color: red;
}

.field:hover .selection {
    opacity: 0.5;
}