<ul class="flex-container flex-start">
  <li class="flex-item">1</li>
  <li class="flex-item">2</li>
  <li class="flex-item">3</li>
  <li class="flex-item">4</li>
  <li class="flex-item">5</li>
</ul>

<ul class="flex-container flex-end">
  <li class="flex-item">1</li>
  <li class="flex-item">2</li>
  <li class="flex-item">3</li>
  <li class="flex-item">4</li>
  <li class="flex-item">5</li>
</ul>

<ul class="flex-container center">
  <li class="flex-item">1</li>
  <li class="flex-item">2</li>
  <li class="flex-item">3</li>
  <li class="flex-item">4</li>
  <li class="flex-item">5</li>
</ul>

<ul class="flex-container space-between">
  <li class="flex-item">1</li>
  <li class="flex-item">2</li>
  <li class="flex-item">3</li>
  <li class="flex-item">4</li>
  <li class="flex-item">5</li>
</ul>

<ul class="flex-container space-around">
  <li class="flex-item">1</li>
  <li class="flex-item">2</li>
  <li class="flex-item">3</li>
  <li class="flex-item">4</li>
  <li class="flex-item">5</li>
</ul>

<ul class="flex-container space-evenly">
  <li class="flex-item">1</li>
  <li class="flex-item">2</li>
  <li class="flex-item">3</li>
  <li class="flex-item">4</li>
  <li class="flex-item">5</li>
</ul>

.flex-container {
  padding: 0;
  margin: 0;
  list-style: none;
  display: flex;
}

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

.flex-end { 
  justify-content: flex-end; 
}  
.flex-end li {
  background: gold;
}

.center { 
  justify-content: center; 
}  
.center li {
  background: deepskyblue;
}

.space-between { 
  justify-content: space-between; 
}  
.space-between li {
  background: lightgreen;
}

.space-around { 
  justify-content: space-around; 
}
.space-around li {
  background: hotpink; 
}

.space-evenly { 
  justify-content: space-evenly; 
}
.space-evenly li {
  background: #bada55; 
}

.flex-item {
  background: tomato;
  padding: 5px;
  width: 60px;
  height: 50px;
  margin: 5px;
  line-height: 50px;
  color: white;
  font-weight: bold;
  font-size: 2em;
  text-align: center;
}