CSS 그리드 자유롭게 배치하기 - grid-template-area
<div class="parent">
<div class="firstChild">firsChild</div>
<div class="secondChild">secondChild</div>
<div class="thirdChild">thirdChild</div>
<div class="fourthChild">fourthChild</div>
</div>

.parent {
display: grid;
grid-auto-rows: 100px;
grid-auto-columns: 100px;
grid-template-areas: "firstChild firstChild firstChild"
"secondChild secondChild fourthChild"
"thirdChild thirdChild fourthChild";
/* 위 모양 대로 생성된다. */
border: solid 10px gray;
}
.firstChild {
grid-area: firstChild;
background-color: plum;
}
.secondChild {
grid-area: secondChild;
background-color: powderblue
}
.thirdChild {
grid-area: thirdChild;
background-color: seashell;
}
.fourthChild {
grid-area: fourthChild;
background-color: wheat;
}