#cesiumContainer {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    margin: 0;
    overflow: hidden;
    padding: 0;
    font-family: sans-serif;
}
html {
    height: 100%;
}
body {
    padding: 0;
    margin: 0;
    overflow: hidden;
    height: 100%;
}