CSS Grid
by s_hiroshi
HTML
<div class="parent">
<div class="div1">
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</div>
<div class="div2">
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</div>
<div class="div3">
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</div>
</div>CSS
.parent {
display: grid;
grid-template-columns: repeat(2, 1fr);
grid-template-rows: repeat(2, 1fr);
grid-column-gap: 0px;
grid-row-gap: 0px;
}
.div1 { grid-area: 1 / 1 / 3 / 3; }
.div2 { grid-area: 1 / 2 / 2 / 3; }
.div3 { grid-area: 2 / 2 / 3 / 3; }