collapsed-border-large-cell-ref.html

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<!DOCTYPE html>

<style>

body {

  --bluetrans: rgba(0,0,255,0.5);

  --yellowtrans: rgba(255,255, 0, 0.5);

  --orangetrans: rgba(255,165,0,0.5);

  --greentrans: rgba(0,255,0, 0.5);

body * {

  box-sizing: border-box;

#container > * {

  position:absolute;

</style>

<div id="container" style="position:relative;width:200px;height:200px">

  <!-- blues -->

  <div style="width:56px;height:150px;background:var(--bluetrans);border: 6px solid blue;border-bottom:none;"></div>

  <div style="width:56px;height:56px;top:150px;background:var(--bluetrans);border-left: 6px solid blue;border-bottom:6px solid blue;"></div>

  <!-- green -->

  <div style="width:94px;height:55px;top:51px;left:56px;background:var(--greentrans);border-top:4px solid green;"></div>

  <div style="width:99px;height:44px;top:106px;left:56px;

  background:var(--greentrans);border-right:4px solid green;"></div>

  <!-- yellow -->

  <div style="width:56px;height:56px;top:50px;left:150px;background:var(--yellowtrans);border:6px solid yellow"></div>

  <!-- orange -->

  <div style="width:156px;height:56px;top:150px;left:50px;background:var(--orangetrans);border: 6px solid orange"></div>

  <!-- transparent -->

  <div style="width:48px;height:49px;top:2px;left:56px;border-top: 2px solid black;border-right:2px solid black"></div>

  <div style="width:50px;height:48px;top:2px;left:104px;border-top: 2px solid black;border-right:2px solid black"></div>

  <div style="width:50px;height:48px;top:2px;left:154px;border-top: 2px solid black;border-right:2px solid black"></div>

  <div style="width:50px;height:44px;top:106px;left:154px;border-right:2px solid black"></div>

</div>