Hidden copy data

by justindeal

HTML

aaa <span class="var var__123456__foo"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" alt="{{123456__foo}}" class="var__123456__foo"/></span> bbb

CSS

.var {
  background-color: lightblue;
}

.var img {
  width: 0px;
  height: 0px;
}

.var__123456__foo::after {
  content: "Foo"
}