body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: deepskyblue;
}


#grid1-1 {
    position: absolute;
    left: 0px;
    top: 0px;
}

#grid1-2 {
    position: absolute;
    left: 200px;
    top: 0px;
}

#grid1-3 {
    position: absolute;
    left: 400px;
    top: 0px;
}

#grid2-1 {
    position: absolute;
    left: 0px;
    top: 200px;
}

#grid2-2 {
    position: absolute;
    left: 200px;
    top: 200px;
}

#grid2-3 {
    position: absolute;
    left: 400px;
    top: 200px;
}

#grid3-1 {
    position: absolute;
    left: 0px;
    top: 400px;
}

#grid3-2 {
    position: absolute;
    left: 200px;
    top: 400px;
}

#grid3-3 {
    position: absolute;
    left: 400px;
    top: 400px;
}