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<!DOCTYPE html>
<link rel="author" title="Javier Contreras" href="mailto:javiercon@microsoft.com">
<style>
body {
margin: 0;
}
.scene {
height: 260px;
position: relative;
width: 330px;
}
.lanes {
background: #dce6f0;
display: grid-lanes;
gap: 20px;
grid-template-columns: repeat(5, 50px);
height: 260px;
width: 330px;
}
.before,
.after,
.side {
background: #52677d;
}
.before,
.after {
height: 30px;
}
.track-two {
grid-column: 2;
}
.track-three {
grid-column: 3;
}
.track-four {
grid-column: 4;
}
.side {
grid-column: 1;
height: 260px;
}
.subgrid {
background: #ffe0a3;
display: grid;
grid-column: 2 / span 3;
grid-template-columns: subgrid;
grid-template-rows: repeat(3, 40px);
row-gap: 20px;
}
.cell {
background: #087f75;
}
.first-cell {
grid-column: 1;
grid-row: 1;
}
.second-cell {
grid-column: 2;
grid-row: 1;
}
.third-cell {
grid-column: 1;
grid-row: 2;
}
.rule {
position: absolute;
width: 6px;
}
.parent-rule {
background: #243c9c;
}
.parent-first {
height: 260px;
left: 57px;
top: 0;
}
.parent-before {
height: 30px;
top: 0;
}
.parent-after {
height: 30px;
top: 230px;
}
.parent-second {
left: 127px;
}
.parent-third {
left: 197px;
}
.child-rule {
background: #b83b00;
top: 50px;
}
.child-first {
height: 100px;
left: 127px;
}
.child-second {
height: 40px;
left: 197px;
}
</style>
<div class="scene">
<div class="lanes">
<div class="before track-two"></div>
<div class="before track-three"></div>
<div class="before track-four"></div>
<div class="side"></div>
<div class="subgrid">
<div class="cell first-cell"></div>
<div class="cell second-cell"></div>
<div class="cell third-cell"></div>
</div>
<div class="after track-two"></div>
<div class="after track-three"></div>
<div class="after track-four"></div>
</div>
<div class="rule parent-rule parent-first"></div>
<div class="rule parent-rule parent-second parent-before"></div>
<div class="rule parent-rule parent-second parent-after"></div>
<div class="rule parent-rule parent-third parent-before"></div>
<div class="rule parent-rule parent-third parent-after"></div>
<div class="rule child-rule child-first"></div>
<div class="rule child-rule child-second"></div>
</div>