Query :- minmax css

HTML-CSS
1

why we require minmax ?
when will be 60px or 1fr be used ,how its determined ?


<style>
.item1{background:LightSkyBlue;}
.item2{background:LightSalmon;}
.item3{background:PaleTurquoise;}
.item4{background:LightPink;}
.item5{background:PaleGreen;}

.container {
  font-size: 40px;
  min-height: 100px;
  width: 100%;
  background: LightGray;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
  grid-template-rows: 1fr 1fr 1fr;
  grid-gap: 10px;
}

.container2 {
  font-size: 40px;
  min-height: 100px;
  width: 100%;
  background: Silver;
  display: grid;
  /* Only change code below this line */

  grid-template-columns: repeat(3, minmax(60px, 1fr));

  /* Only change code above this line */
  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>
<div class="container2">
<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>

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Challenge: Create Flexible Layouts Using auto-fit

Link to the challenge:

2

your are not givin to “grid-template-columns:” a number of px em etc, so the navigator will calculate the size of the container, to repeat the columns. but the navigator needs a min of size to make the math, because if it doesn’t know that pharameter it will not do anything, because it can’t do the math

3

it is determined by the size of the container.

4

will calculate by the size of the container *