Flexbox space-around grid

HTML

<div class="container">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
  <div class="item">4</div>
  <div class="item">5</div>
</div>

CSS

.container{
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  justify-content: space-between;
  
  background-color: #ffe789;
}

/*.container::after{
  content: "";
  flex-basis: 125px;
  flex-grow: 1;
}*/

.item{
  flex-basis: 125px;
  flex-grow: 1;
  
  background-color: #89ffb8;
  text-align: center;
  margin: 5px;
  font-size: 50px;
  font-family: Arial;
  padding-top: 25px;
  padding-bottom: 25px;
  border-radius: 10px;
}