<div class="container">
  <div class="one">1</div>
  <div class="two">2</div>
  <div class="three">3</div>
  <div class="four">4</div>
  <div class="five">5</div>

</div>

body {
  padding: 20px;
  font: 1em Helvetica Neue, Helvetica, Arial, sans-serif;
  display: flex;
  justify-content: center;
}

* {box-sizing: border-box;}

p {
  margin: 0 0 1em 0;
}

.container {
  width: 500px;
  border: 5px solid rgb(111,41,97);
  border-radius: .5em;
  padding: 10px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-auto-rows: minmax(50px, auto);
  grid-gap: 20px;
  grid-template-areas: 
    "a a a"
    "b c c"
    ". . d"
    "e e d"
}

.container > div {
  padding: 10px;
  background-color: rgba(111,41,97,.3);
  border: 2px solid rgba(111,41,97,.5);
}

.one {
  grid-area: a;
}

.two {
  grid-area: b;
}

.three {
  grid-area: c;
}

.four {
  grid-area: d;
}

.five {
  grid-area: e;
}