body {
  background-color: white;
}

h1 {
  color: navy;
  margin-left: 5px;
}

h2 {
  color: green;
  margin-left: 5px;
}

.footer { 
    color: red;
    position: absolute; 
    bottom: 0; 
    left: 10; 
    z-index: 10;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;

}