#container {
        background-color: rgb(2, 9, 12); margin: 0 auto;
        width: 1600px;
        height: 1080px;
    }

    .circle1, .circle2{
    width: 200px;
    height: 200px;
    }
    .square1, .square3{
    width: 170px;
    height: 200px;    
    }
    .square2{
    width: 400px;
    height: 180px;
    }
    .square4{
    width: 250px;
    height: 60px;
    }
    .circle1, .circle2{
    border-radius: 50%;
    }
    #blockRed {
    background-color: rgb(230, 38, 38);
    position: absolute;
    }
    #blockgrey {
    background-color: rgb(214, 214, 214);
    position: absolute;
    }
    #blockblue {
    background-color: rgb(57, 110, 130);
    position: absolute;
    }
    #blockDarkGrey {
    background-color: rgb(130, 130, 130);
    position: absolute;
    }