<section>
  <div class="grid__container">
    <div class="grid__item" contenteditable="true">This text can be edited by the user.</div>
    <div class="grid__item">
      <img src="https://picsum.photos/200/100?random=3" alt="">
    </div>
    <div class="grid__item">YoYo!(^_^).</div>
</section>

@import url("https://fonts.googleapis.com/css2?family=Exo:wght@600&display=swap");

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

body {
  width: 100vw;
  min-height: 100vh;

  display: flex;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  font-family: "Exo", Arial, sans-serif;
  background-color: #f7f7f7;

  padding: 20px;
}

section {
  max-width: 90vw;
  width: 100%;
  margin: 0 auto;

  display: flex;
  justify-content: center;
  align-items: center;
}

.grid__container {
  border: 1px dashed #f36;
  box-shadow: 0 0 0 6px rgb(0 0 0 / 13%);
  border-radius: 1px;
  position: relative;
}

.grid__item {
  background-color: #f7f7f7;
  place-self: center stretch;
  color: #f444fff;
}
.grid__item:not(:nth-child(2)) {
  padding: 5px;
}
.grid__item:nth-child(1) {
  background-color: #f1c2c6;
}

.grid__item:nth-child(2) {
  background-color: #dac2f1;
}

.grid__item:nth-child(3) {
  background-color: #ccf1c2;
}

.grid__item:nth-child(4) {
  background-color: #c2e9f1;
}

.grid__item:nth-child(5) {
  background-color: #f1ebc2;
}
.grid__item:nth-child(6) {
  background-color: #09f;
}

.grid__item:nth-child(7) {
  background-color: #ff5722;
}

.grid__item:nth-child(8) {
  background-color: #8bc34a;
}

.grid__item:nth-child(9) {
  background-color: #f66803;
}

.grid__item:nth-child(10) {
  background-color: #0d815f;
}
.grid__item:nth-child(11) {
  background-color: #28d1c2;
}
.grid__item:nth-child(12) {
  background-color: #4a28d1;
}

img {
  display: block;
}

.grid__container {
  display: grid;
  grid-template-columns: auto auto auto;
  gap: 5px;
}