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

body {
  font-family: sans-serif;
}

.landing {
  height: 100vh;
  background-color: coral;
  display: grid;
  place-items: center;
}
h1 {
  text-transform: uppercase;
}
.timeline-container {
  display: grid;
  grid-template-columns: 1fr 10% 1fr;
  grid-template-rows: repeat(4, 1fr);
  background: url(https://i.picsum.photos/id/360/1925/1280.jpg?hmac=vX9T-qgnqfOUqLnxlsxCZfkKn_wi-9vtPKdbq7H6EgU);
  background-size: cover;
  background-attachment: fixed;
  align-items: center;
  justify-items: center;
  padding: 10%;
}
.line {
  width: 10px;
  height: 100%;
  grid-column-start: 2;
  grid-row-start: 1;
  grid-row-end: 5;
  background: rgba(255, 255, 255, 0.4);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 10px;
}
.item1 {
  grid-column: 3;
  grid-row: 1;
}
.item2 {
  grid-column: 1;
  grid-row: 2;
}
.item3 {
  grid-column: 3;
  grid-row: 3;
}
.item4 {
  grid-column: 1;
  grid-row: 4;
}
.timeline-item {
  color: black;
  text-shadow: 3px 3px 3px rgba(0, 0, 0, 0.5);
  padding: 10%;
  margin: 10%;
  background: rgba(255, 255, 255, 0.4);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  backdrop-filter: blur(4px);
  border-radius: 10px;
}

@media screen and (max-width: 800px) {
  .timeline-container {
    grid-template-columns: 10% 1fr;
  }

  .line {
    grid-column-start: 1;
  }
  .timeline-item {
    grid-column: 2;
  }
}