CSS grid-template-areas: 그리드 영역 정의 및 명명

.grid {
  grid-template-areas:
    "a a a"
    "b c c"
    "b c c";
  /* grid-template-areas:
    "b b a"
    "b b c"
    "b b c"; */
  /* grid-template-areas:
    ". a a"
    "b c c"
    "b . ."; */
  /* grid-template-areas:
    "c c c"
    ". b ."
    "a a a"; */
}

.grid {
  width: 200px;
  height: 200px;
  background: #ddd;
  color: #fff;
  display: grid;
}
.a, .b, .c {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}
.a {
  background: #24c0a5;
  grid-area: a;
}
.b {
  background: #4011c5;
  grid-area: b;
}
.c {
  background: #b42809;
  grid-area: c;
}

<div class="grid">
  <div class="a">A</div>
  <div class="b">B</div>
  <div class="c">C</div>
</div>

/* 키워드 값 */
grid-template-areas: none;

/* <string> 값 */
grid-template-areas: "a b";
grid-template-areas: "a b b"
                     "a c d";

/* 전역 값 */
grid-template-areas: inherit;
grid-template-areas: initial;
grid-template-areas: revert;
grid-template-areas: revert-layer;
grid-template-areas: unset;

<article>
  <header>헤더</header>
  <nav>메뉴</nav>
  <main>본문</main>
  <footer>푸터</footer>
</article>

article {
  color: #fff;
  height: 300px;
  display: grid;
  grid-template-areas:
    "header header"
    "nav    main"
    "nav    footer";
  grid-template-columns: 150px 1fr;
  grid-template-rows: 50px 1fr 50px;
}

header {
  background: #24c0a5;
  grid-area: header;
}

nav {
  background: #4011c5;
  grid-area: nav;
}

main {
  background: #b42809;
  grid-area: main;
}

footer {
  background: #24c0a5;
  grid-area: footer;
}