<!DOCTYPE html>
<link rel="author" title="Koji Ishii" href="mailto:kojii@chromium.org">
<link rel="help" href="https://crbug.com/1213358">
<style type="text/css">
.CLASS2 {
  writing-mode: vertical-lr;
}
.CLASS4 {
  columns: +6.9vh 8589934576;
}
samp, button, div.CLASS1 {
  overflow-x: auto;
  float: left;
  block-size: 2.0%;
}
</style>
<samp class="CLASS2">
  <button>
    <div class="CLASS1">
      <h6 class="CLASS4">ABC</h6>
    </div>
    ABC
  </button>
</samp>
