html {
    -ms-touch-action: none;
}

body {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    margin: 0;
    cursor: default;
    color: #888;
    text-align: center;
    font-family: Helvetica, Verdana, Arial, sans-serif;
    display: flex;
    flex-direction: column;
}

#mainContainer {
    position: relative;
    width: 1px;
    height: 1px;
}

#content,
#adContainer {
    position: absolute;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
}

#contentElement {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#GameCanvas ｛ height: 1px;
｝