#myPhoto {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

#mySummer {
  color: Darkblue;          
  position: relative;      /* allows z-index */
  z-index: 10;             /* on top of photo */
  background-color: rgba(255, 255, 255, 0.75);
  width: 600px;
  margin: 15px auto;
  padding: 4px;
  font-family: t;
  font-size: 50px;
  text-align: center;
}

#banner {
  color: hotpink;
  position: relative;
  z-index: 10;
  background-color: rgba(255, 255, 255, 0.75);
  width: 778px;
  margin: 10px auto;
  font-size: 72px;
  font-family: monospace;
  text-align: bottom;
}