body{
  background-color:darkblue;
  color:white;}
header{
  padding: 1vw 1vw;
  text-align:center;
  background-image:linear-gradient(to bottom right, rgb(255,0,0,.5), rgb(0,255,0,0.5));
  background-size:cover;}
main{
  background-color:white;
  padding:2vw;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;}
figure img{
  width:500px;
  height:500px;}
figure{
  display:flex;
  justify-content:center;
  text-align:center;
  border:10px solid blue;
  margin:1 24vw 1vw 24vw;
  max-width:550px;}
figcaption{
  width:490px;
  text-align:center;
  font-size:2em;}