body {
  background-color:chocolate;
  padding:75px;
}
.header {
  background-color:Crimson;
  padding:25px;
  text-align:center;
  margin:30px;
  border:2px solid black;
}
ul {
  text-align:center;
  list-style-type:none;
}
.combinations1-4 {
  background-color:khaki;
}
.content {
  background-color:Maroon;
  margin:30px;
}