html, body {
    height: 100%;
    margin: 0;
}

.black-ground {
    background: black;
}

.white-ground {
    background: white;
}

#app {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

#five-control {
    position: absolute;
    top: 50%;
    left: 50%;
    border: solid 1px red;
    background: red;
    z-index: 0;
    text-align: center;
}

#five-control button {
    font-size: 34px;
    margin-right: 30px;
    padding: 0 27px;
}

#five-control button:last-child {
    margin-right: 0;
}

#five-board {
    position: absolute;
    top: 50%;
    left: 50%;
    border: solid 1px red;
    background: yellow;
    z-index: 0;
}

#five-board .grid {
    width: 49px;
    height: 49px;
    position: absolute;
    border: solid 1px black;
    z-index: 1;
}

#five-board .point {
    width: 11px;
    height: 11px;
    position: absolute;
    border-radius: 5px;
    z-index: 2;
}

#five-board .space {
    width: 51px;
    height: 51px;
    position: absolute;
    z-index: 3;
}

#five-board .space .piece {
    width: 41px;
    height: 41px;
    position: absolute;
    top: 5px;
    left: 5px;
    border-radius: 20px;
    z-index: 4;
    cursor: pointer;
}