<h3>「justify-content: flex-start;」を使用した例</h3>
<div class="flex-start">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
</div>

<hr>
<h3>「justify-content: flex-end;」を使用した例</h3>
<div class="flex-end">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
</div>

<hr>
<h3>「justify-content: center;」を使用した例</h3>
<div class="center">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
</div>

<hr>
<h3>「justify-content: space-between;」を使用した例</h3>
<div class="space-between">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
</div>

<hr>
<h3>「justify-content: space-around;」を使用した例</h3>
<div class="space-around">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
</div>
.flex-start {
  display:flex;
  justify-content: flex-start;
}

.flex-end {
  display:flex;
  justify-content: flex-end;
}

.center {
  display:flex;
  justify-content: center;
}

.space-between {
  display:flex;
  justify-content: space-between;
}

.space-around {
  display:flex;
  justify-content: space-around;
}

.flex-start, .flex-end, .center, .space-between,  .space-around {
  background-color: lightskyblue;
}


.item {
  background-color: red;
  color:#fff;
  margin: 10px;
  width: 30px;
  height: 30px;
  text-align: center;
}

.wrap .item {
  background-color: blue;
}

.wrap-reverse .item {
  background-color: green;
}

External CSS

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External JavaScript

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