#container1 {
    background-color: rgb(197, 184, 255); 
    margin: 20px;
    width: 400px;
}

.square,.circle {
    width:100px;
    height:100px;
    display: block;
    position:relative;
    /*float: right;*/
}

.square {
    border-radius: 50%;
}

#blockRed {
    background-color: rgb(243, 253, 159);
    /*position: absolute;*/
}

#blockYellow {
    background-color: rgb(253, 171, 235);
    /*margin-top: 400px;*/
    
}