stretch-flex-item-checkbox-input-ref.html

<!DOCTYPE html>
<input type="checkbox" style="display: block; width: 50px; height: 50px; margin: 0;">
<input type="checkbox" style="display: block; width: 50px; height: 50px; margin: 0;">

chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/stretch-flex-item-checkbox-input-ref.html