<section class="grid">
  <div class="box1"><img class="grid-img" src="https://picsum.photos/id/237/500/300" alt="pic1" width="500" height="300">
    <p class="imgtext">
      <button class="mybtn">Some text</button>
      <span>Lorem ipsum</span>
    </p>
  </div>
  <div class="box2"><img class="grid-img" src="https://picsum.photos/id/237/500/300" alt="pic1" width="500" height="300">
    <p class="imgtext">
      <button class="mybtn">Some text</button>
      <span>Lorem ipsum</span>
    </p>
  </div>
  <div class="box3"><img class="grid-img" src="https://picsum.photos/id/237/500/300" alt="pic1" width="500" height="300">
    <p class="imgtext">
      <button class="mybtn">Some text</button>
      <span>Lorem ipsum</span>
    </p>
  </div>
  <div class="box4"><img class="grid-img" src="https://picsum.photos/id/237/500/300" alt="pic1" width="500" height="300">
    <p class="imgtext">
      <button class="mybtn">Some text</button>
      <span>Lorem ipsum</span>
    </p>
  </div>
  <div class="box5"><img class="grid-img" src="https://picsum.photos/id/237/500/300" alt="pic1" width="500" height="300">
    <p class="imgtext">
      <button class="mybtn">Some text</button>
      <span>Lorem ipsum</span>
    </p>
  </div>
</section>

html {
  box-sizing: border-box;
}
*,
*:before,
*:after {
  box-sizing: inherit;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
}

.grid {
  display: grid;
  max-width: 1280px;
  margin: auto;
  padding: 20px;
  grid-template-areas:
    "box1  box2 box2 box3"
    "box1  box4 box5 box5";
  grid-template-columns: 1.5fr 0.5fr 0.5fr 0.5fr;
  grid-gap: 0.5rem;
  margin-bottom: 1rem;
}
.grid > div {
  position: relative;
}
.box1 {
  grid-area: box1;
}
.box2 {
  grid-area: box2;
}
.box3 {
  grid-area: box3;
}
.box4 {
  grid-area: box4;
}
.box5 {
  grid-area: box5;
}
.grid-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.imgtext {
  position: absolute;
  bottom: 1rem;
  left: 0;
}
.mybtn {
  -webkit-appearance: none;
  appearance: none;
  background: rgba(0, 255, 255, 0.7);
  border: none;
  border-radius: 0;
  padding: 5px 10px;
  color: white;
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.imgtext span {
  display: block;
  background: rgba(0, 0, 0, 0.5);
  padding: 5px 10px;
  color: white;
}

@media screen and (max-width: 800px) {
  .grid {
    display: block;
  }
}