ember-slimguide/addon/styles/well.css

A test for bottled-ember

.well {
  display: flex;
  height: 100%;
  box-sizing: border-box;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-gray-200);
  overflow: hidden;
}

a.well:link,
a.well:visited,
.well {
  background: var(--color-white);
}

a.well:focus {
  border-color: var(--color-white);
}

a.well:hover {
  border-color: var(--color-gray-300);
}

.well img {
  display: block;
  margin: auto;
}

[class*="well-"] {
  position: relative;
  height: 0;
}

.well-1\/1 {
  height: 0;
  padding: 0 0 100%;
}

.well-4\/3 {
  height: 0;
  padding: 0 0 75%;
}

.well-16\/9 {
  height: 0;
  padding: 0 0 56.25%;
}

[class*="well-"] img {
  position: absolute;
  top: 50%;
  left: 50%;
  max-width: calc(100% - 2 * var(--spacing-3));
  max-height: calc(100% - 2 * var(--spacing-3));
  transform: translate(-50%, -50%);
}