HTML5 CSS grid placing items in areas

Tell us what’s happening:
I don’t understand how there are 4 vertical lines, not 3. Can someone please explain this concept?
Your code so far


<style>
.item1{background:LightSkyBlue;}
.item2{background:LightSalmon;}
.item3{background:PaleTurquoise;}
.item4{background:LightPink;}

.item5 {
  background: PaleGreen;
  /* Only change code below this line */

grid-area: 3/1/4/4;
  /* Only change code above this line */
}

.container {
  font-size: 40px;
  min-height: 300px;
  width: 100%;
  background: LightGray;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  grid-gap: 10px;
}
</style>

<div class="container">
<div class="item1">1</div>
<div class="item2">2</div>
<div class="item3">3</div>
<div class="item4">4</div>
<div class="item5">5</div>
</div>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.190 Safari/537.36.

Challenge: Use grid-area Without Creating an Areas Template

Link to the challenge:

Maybe revisit this lesson to help with understanding.

Just did and I understood it thank you!

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