body{
   background-color: #FDF0E9;
   font-family: 'Roboto';
   padding: 0;
   margin: 0;
}

#back{
  width: 100%;
  height: 120px;
  display: flex;
  font-size: 20px;
  background-color: #15C1E5;
  align-content: center;
  flex-wrap: wrap;
  justify-content: flex-start;
}

#back a{
  text-decoration: none;
  color: #fff;
  padding: 20px;
  margin-right: 20px;
}

.gallery{
  margin: 0 auto;
  width: 80%;
  display: flex;
  flex-wrap: wrap;
  overflow: hidden;
}

.gallery img{
  height: 200px;
  flex-grow: 1;
  object-fit: cover;
  margin: 2px;
  background-position: center;
}

.gallery img.full {
  position: fixed;
  top: 0;
  left: 0;
  margin: 0 auto;
  z-index: 999;
  width: 100vw; height: 100vh;
  object-fit: contain; /* fill | contain | cover | scale-down */
  border: 0;
   background-color: #FFE6E2;
}


.gallery img{
transition: all opacity .135s cubic-bezier(0, 0, 0.2, 1);
}