html {
  height: 100%;
  width: 100%;
}
body{
  text-align: center;
}

 header img{
  width: 100px;
  display: block;
  margin: auto;
}

header h1{
  font-family:'Lilita One', cursive;
  font-weight: bold;
  font-size: 48px;
  margin: 0px;
  color: #E96479;
  text-align: center;
  text-decoration: underline;
}

header h2{
  font-family: arial;
  text-align: center;
}

.principal img{
  width: 400px;
  display: block;
  margin: auto;
}

.compra a{
  border-style: solid;
  border-color: blue;
  border-width: 5px;
  border-radius: 5px;
  background-color: #7DB9B6;
  padding: 10px;
}