<div class="items">
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
</div>

*,
*:after,
*:before {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.items {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-gap: 40px;
  padding: 0 40px;
}

.item {
  width: 100%;
  height: 40px;
  background: blue;
}