body {
  background-image: url("/pics/nebula.png");
}

/*image swap*/
.image-swap { position: relative; }
.image-swap img:nth-child(1){position:absolute; transition:0.5s;}
.image-swap img:nth-child(1):hover{opacity:0;}
.image-swap { position: relative; }
 /*end image swap (THANK YOU CREEDON ON FORUM.SQUARESPACE!!!!*/