.spacer {position: relative;height: var(--spacer-mobile, 50px);}
.spacer:before, .spacer:after {content: " ";display: table;clear: both;}
@media only screen and (min-width: 768px) {
  .spacer {height: var(--spacer-desktop, 100px);} 
}
.spacer.has-border-separator:before {content: "";height: 1px;display: block;margin: 0 auto;background: var(--color-border, #dadce0);width: 100%;position: absolute;top: 50%;left: 0;}