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<style>
.container {
    font-size: 40px;
    min-height: 300px;
    width: 100%;
    background: LightGray;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-gap: 10px;
  }
  .item1{background: LightSkyBlue;}
  .item2{background: LightSalmon; }
  .item3{background:PaleTurquoise;}
  .item4{background:LightPink;}
  .item5{background:PaleGreen;}
</style>

<div class="container">
  <div class="item1">1</div>
  <div class="item2">2</div>
  <div class="item3">3</div>
  <div class="item4">4</div>
  <div class="item5">5</div>
</div>

justify-self

css  grid-layout 셀 내부의 위치를 가로로 정렬 

기본 값 :stretch ( 셀의 전체 너비를 채움)

상자 2에 justify-self의 속성을 사용해보자 

•  start :  내용을  셀 왼쪽에 정렬
• center : 내용을 셀 중앙에 정렬 
• end : 내용을 셀 오른쪽에 정렬

.item2 {
    background: LightSalmon;
    justify-self : start
   
  }

.item2 {
    background: LightSalmon;
    justify-self : center
   
  }

.item2 {
    background: LightSalmon;
    justify-self : end
   
  }

'

justify-items

모든 항목에 대해 적용 하고 싶을 때

<style>
.container {
    font-size: 40px;
    min-height: 300px;
    width: 100%;
    background: LightGray;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-gap: 10px;
  }
  .item1{background: LightSkyBlue;}
  .item2{background: LightSalmon; }
  .item3{background:PaleTurquoise;}
  .item4{background:LightPink;}
  .item5{background:PaleGreen;}
</style>

<div class="container">
  <div class="item1">1</div>
  <div class="item2">2</div>
  <div class="item3">3</div>
  <div class="item4">4</div>
  <div class="item5">5</div>
</div>

5개의 상자를 감싸고 있는 컨테이너 클레스에 justify-items 속성 사용

justify-items : center 

.container {
    font-size: 40px;
    min-height: 300px;
    width: 100%;
    background: LightGray;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-gap: 10px;
   
    justify-items: center;
  
  }

justify-items : start

.container {
    font-size: 40px;
    min-height: 300px;
    width: 100%;
    background: LightGray;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-gap: 10px;
   
    justify-items: start;
  
  }

justify-items : end

.container {
    font-size: 40px;
    min-height: 300px;
    width: 100%;
    background: LightGray;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-gap: 10px;
   
    justify-items: end;
  
  }