<style>
div {
  max-width: 30px;
  display: flex;
  color: transparent;
  font-family: Ahem;
  font-size: 10px;
  position: absolute;
}
input {
  outline: solid 1px black;
}
</style>
<div><input type="checkbox">PASS if form control is not overlapped.</div>
<div style="top: 100px;"><input type="radio">PASS if form control is not overlapped.</div>
