<!DOCTYPE html> <!-- webkit-test-runner [ LayoutFormattingContextEnabled=true LayoutFormattingContextIntegrationEnabled=false ] -->
<style>
.first {
  height: 100px;
  width: 40px;
  background-color: green;
}

.second {
  height: 100px;
  width: 10px;
  position: relative;
  top: -100px;
  left: 40px;
  background-color: blue;
}
</style>
<div class=first></div>
<div class=second></div>