#container {
    background-color: rgb(241, 225, 120);
      margin: 0px auto;
      padding: 0px;
      width: 400px;
      height: 400px;
    background-image: url('sky.jpeg');
    background-size:cover;
}
.square,.circle {
    width:100px;
    height:100px;
    display: inline-block;
    float: left;
}
.circle {
    border-radius:50%;
}
#blockPink {
    background-color: pink;
}
#blockBlue {
    background-color: blue; 
  }