@media (orientation: portrait) {
 body {
   width: 80vw;
   background-color: palegreen;
   margin: 0 auto;
   text-align: center;
}

h1{
  font-family: "Estonia", cursive;
  padding: 1.3em;
  font-size: 10vw;
}

.collage{
  position:relative;
}

#guide{
  display: block;
  margin: auto;
  width: 100%;
  border-radius: 64px;
  -webkit-mask-image: radial-gradient(
     ellipse,
     black 60%,
     transparent 100%
   );

   mask-image: radial-gradient(
     ellipse,
     black 30%,
     transparent 100%
   );


}