JUSTIFY-CONTENT

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
      * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.flex-container-1 {
  display: flex;
  justify-content: flex-start;
}

.flex-container-2 {
  display: flex;
  justify-content: flex-end;
}

.flex-container-3 {
  display: flex;
  justify-content: center;
}

.flex-container-4 {
  display: flex;
  justify-content: space-between;
}

.flex-container-5 {
  display: flex;
  justify-content: space-around;
}

.flex-container-6 {
  display: flex;
  justify-content: space-evenly;
}
.flex-item {
  height: 10vh;
  width: 20%;
  margin: 5px;
  padding: 5px;
  font-size: 32px;
}

.red {
  background-color: red;
  color: white;
}

.green {
  background-color: green;
  color: white;
}

.blue {
  background-color: blue;
  color: white;
}

.yellow {
  background-color: yellow;
  color: black;
}

.pink {
  background-color: pink;
  color: black;
}

  </style>
  <title>CSS FLEXBOX</title>
</head>

<body>
  <div class="flex-container-1">
    <div class="flex-item red">1</div>
    <div class="flex-item green">2</div>
    <div class="flex-item blue">3</div>
    <div class="flex-item yellow">4</div>
  </div>

  <div class="flex-container-2">
    <div class="flex-item red">1</div>
    <div class="flex-item green">2</div>
    <div class="flex-item blue">3</div>
    <div class="flex-item yellow">4</div>
  </div>

  <div class="flex-container-3">
    <div class="flex-item red">1</div>
    <div class="flex-item green">2</div>
    <div class="flex-item blue">3</div>
    <div class="flex-item yellow">4</div>
  </div>

  <div class="flex-container-4">
    <div class="flex-item red">1</div>
    <div class="flex-item green">2</div>
    <div class="flex-item blue">3</div>
    <div class="flex-item yellow">4</div>
  </div>

  <div class="flex-container-5">
    <div class="flex-item red">1</div>
    <div class="flex-item green">2</div>
    <div class="flex-item blue">3</div>
    <div class="flex-item yellow">4</div>
  </div>

  <div class="flex-container-6">
    <div class="flex-item red">1</div>
    <div class="flex-item green">2</div>
    <div class="flex-item blue">3</div>
    <div class="flex-item yellow">4</div>
  </div>
</body>

</html>