<div class="caption">justify-content: flex-start; (default)</div>
<div class="flex-container-start">
  <div>
    <p>1</p>
  </div>
  <div>
    <p>2</p>
  </div>
  <div>
    <p>3</p>
  </div>
  <div>
    <p>4</p>
  </div>
  <div>
    <p>5</p>
  </div>
  <div>
    <p>6</p>
  </div>
  <div>
    <p>7</p>
  </div>
  <div>
    <p>8</p>
  </div>
</div>
<div class="caption">justify-content: flex-end;</div>
<div class="flex-container-end">
  <div>
    <p>1</p>
  </div>
  <div>
    <p>2</p>
  </div>
  <div>
    <p>3</p>
  </div>
  <div>
    <p>4</p>
  </div>
  <div>
    <p>5</p>
  </div>
  <div>
    <p>6</p>
  </div>
  <div>
    <p>7</p>
  </div>
  <div>
    <p>8</p>
  </div>
</div>
<div class="caption">justify-content: center;</div>
<div class="flex-container-center">
  <div>
    <p>1</p>
  </div>
  <div>
    <p>2</p>
  </div>
  <div>
    <p>3</p>
  </div>
  <div>
    <p>4</p>
  </div>
  <div>
    <p>5</p>
  </div>
  <div>
    <p>6</p>
  </div>
  <div>
    <p>7</p>
  </div>
  <div>
    <p>8</p>
  </div>
</div>

.flex-container-start,
.flex-container-end,
.flex-container-center {
  display: flex;
  background-color: lighten(darkorange, 20%);
  border: 1px solid black;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 10px;

  & div {
    border: 1px solid black;
    width: 48px;
    height: 48px;
    background-color: darkorange;
    margin: 5px;
  }

  p {
    text-align: center;
  }
}

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

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

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

.caption {
  text-align: center;
}