.container {
  display: grid;
  width:800px;
  height: 800px;
  grid-template-columns: 800px;
  grid-template-rows:40px 40px 1fr 50px 50px;
  grid-gap: 1rem;
  grid-template-areas:
      "header header header"
      "content-1 content-1 content-1"
      "content-2 content-2 content-2"
      "content-3 content-3 content-3" 
      "footer footer footer";
}

.header {
  grid-area: header;
}
.content-1 {
  grid-area: content-1;
}
.content-2 {
    grid-area: content-2;
  }
.content-3 {
    grid-area: content-3;
  }
.footer {
  grid-area: footer;
  grid-row: 5 / 5;
  grid-column: 1 / 4;
}


/* OTHER STYLES */

body {
  background-color: #000000;
  display: flex;
  justify-content: center;
  padding: 10px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

.item {
  background-color: #1EAAFC;
  background-image: linear-gradient(130deg, rgb(0, 0, 0) 0%, rgb(0, 0, 0) 85%, rgb(0, 0, 0) 100%);
  box-shadow: 0 10px 20px rgba(0,0,0,0.23), 0 6px 6px rgba(0,0,0,0.23);
  color: #ffffff;
  border-radius: 1px;
  border: 1px solid #000000;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 18px;
  font-weight: bold;
}

.header {
  background-color: rgb(0, 0, 0);
  background-image: linear-gradient(160deg, rgb(0, 0, 0) 0%, rgb(0, 0, 0) 127%);
}

.content-1 {
  background-color: rgb(0, 0, 0);
  background-image: linear-gradient(160deg, rgb(0, 0, 0) 0%, rgb(0, 0, 0) 127%);
}

.content-2 {
  background-color: rgb(0, 0, 0);
  background-image: linear-gradient(160deg, rgb(0, 0, 0) 0%, rgb(0, 0, 0) 127%);
}

.content-3 {
  background-color: rgb(0, 0, 0);
  background-image: linear-gradient(160deg, rgb(0, 0, 0) 0%, rgb(0, 0, 0) 127%);
}

.footer {
  background-color: rgb(0, 0, 0);
  background-image: linear-gradient(160deg, rgb(0, 0, 0) 0%, rgb(0, 0, 0) 127%);
}