.sample-tutorial {
    position: relative;
    height: 100%;
    overflow: hidden;
}
body {
    position: absolute;
    margin: 0;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}
.gc-across-sheet-ftb {
    z-index: -1 !important;
}
.gc-across-sheet-func-popup {
    z-index: -1 !important;
}