#shells-dissolve-acidified-ocean-water .before-after-container,
#shells-dissolve-acidified-ocean-water .before img {
  display: block;
  width: 444px;
  height: auto;
}

/* iPhone portrait */
@media screen and (max-width: 400px) {
 #shells-dissolve-acidified-ocean-water .before-after-container,
 #shells-dissolve-acidified-ocean-water .before img {
    width: 280px;
    height: auto;
  } 
}