body {
  font: 400 14px Arial;
}

.content {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  height: 100%;
}

.header {
  width: 500px;
  height: 20px;
  padding-bottom: .5rem;
}

.overflow-button:after {
  padding-left: .25rem;
  content: attr(data-scale);
}

.overflow-hidden {
  overflow: hidden;
}

.container {
  display: flex;
  width: 500px;
  height: 500px;
  border: 1px solid gray;
  justify-content: center;
}

.image-container {
  display: flex;
  flex: 0 0 500px;
  justify-content: center;
  will-change: transform;
  margin: auto;
}

.left {
  left: 100%
}

.right {
  right: 100%
}

img {
  position: relative;
  max-width:100%;
  max-height:500px;
  margin: 0 auto auto;
}

.align-right {
  float: right;
}