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    <!-- 까만 상자들에 관련된 코드입니다 -->
    <div class="color1"></div>
    <div class="color1 color2"></div>
    <div class="color1 color2" id="color3"></div>
    <!-- 이미지와 관련된 코드입니다. -->
    <main class="main"></main>



  해보세요 ✅

  CSS에는 규칙이 있습니다.

  1) 문서의 위쪽보다 아래쪽에 작성된 CSS코드가 우선적으로 적용됩니다.
  2) 태그보다 클래스, 클래스보다 아이디 선택자에 작성된 CSS코드가 우선적으로 적용됩니다.

  이러한 규칙을 "cascading rule" 이라고 합니다.

  까만색의 상자들이 오른쪽에 있는 이미지와 같은 배경색을 가지도록
  각각의 💬을 적절한 값으로 고쳐주세요!


div {
  width: 100px;
  height: 100px;
  background-color: black;
  border-bottom: 1px white solid;

.main {
  position: fixed;
  top: 8px;
  left: 120px;
  width: 100px;
  height: 303px;
  background-image: linear-gradient(
    olive 33.33%, 
    orangered 33.33%, 
    orangered 66.66%, 
    aqua 66.66%

.💬 {
  background-color: olive;

.💬 {
  background-color: orangered;  

#💬 {
  background-color: aqua;