.fiv-image-block { display: block; height: auto; border-radius: 0; margin: 2em auto; }
.fiv-image-block--normal { max-width: 600px; width: 100%; }
.fiv-image-block--max { max-width: 100vw; width: 100vw; margin-left: calc(-50vw + 50%); margin-right: calc(-50vw + 50%); }
.fiv-image-block--full { width: 100vw; max-width: 100vw; margin-left: calc(-50vw + 50%); margin-right: calc(-50vw + 50%); }
@media (max-width: 600px) {
  .fiv-image-block--normal { max-width: 100%; }
  .fiv-image-block--max, .fiv-image-block--full { width: 100vw; max-width: 100vw; }
}