.square {
text-align: center;
background-color: #16a868;
line-height: 70px;
width: 400px;
height: 800px;
color: #701ba1;
margin: 20px auto;
background-image: url(https://i.pinimg.com/1200x/31/75/fa/3175fa86088eb256d2f1bdf085f53c66.jpg);
}