ackground: grey; }

e {
  border: 0 solid lightblue;
  border-bottom-width: 40px;
  margin: -5px 0;
}
  </style>
</head>
<body>

<div class="grid">
<x style="grid-row:1"></x><x style="grid-row:2"></x><x style="grid-row:3"></x><x style="grid-row:4"></x><x style="grid-row:5"></x><x style="grid-row:6"></x>
<div class="subgrid">
<c>c</c>
<d>d</d>
<e></e>
</div>
</div>

</body>
</html>
