body {
  background-color: green;
  }
  
h2{
  color: white;
  }
    
img {
  width: 300px;
  }

.square {
  background-color: blue;
  color: white; 
  width: 50px;
  height: 50px;
  font-weight: bold;
  /*margin: 5px;*/
  margin-top: 20px;
  /*padding: 5px;*/
  padding-top: 15px;
  }