.fade-in-element {
  $base-border-color: gainsboro !default;
  $base-border-radius: 3px !default;
  $base-background-color: white !default;
  $base-line-height: 1.5em !default;
  $base-spacing: 1.5em !default;
  $dark-gray: #333 !default;
  $base-font-color: $dark-gray !default;

  @include clearfix;
  background: $base-background-color;
  border: 1px solid silver;
  border-radius: $base-border-radius;
  box-shadow: 0 2px 2px transparentize(black, 0.8);
  line-height: $base-line-height;
  margin-bottom: 4em;
  padding: $base-spacing;
  text-align: center;
  width: 100%;

  p {
    color: $base-font-color;
    line-height: $base-line-height;
  }
}

.js-fade-element-hide {
  opacity: 0;
}

.js-fade-element-show {
  opacity: 1;
  transition: all 0.4s ease-in-out;
}