CSS में फ्लेक्स एलिमेंट्स की जीरो ग्रीड

Задание 1

html<div class="parent">
  <div class="child elem1">1</div>
  <div class="child elem2">2</div>
  <div class="child elem3">3</div>
</div>

css.parent {
  display: flex;
  width: 500px;
  height: 200px;
  border: 1px solid red;
}
.child {
  height: 50px;
  border: 1px solid green;
}
.elem1 {
  width: 200px;
  flex-grow: 0;
}
.elem2 {
  width: 100px;
  flex-grow: 1;
}
.elem3 {
  width: 100px;
  flex-grow: 1;
}

Задание 2

html<div class="parent">
  <div class="child elem1">1</div>
  <div class="child elem2">2</div>
  <div class="child elem3">3</div>
</div>

css.parent {
  display: flex;
  width: 900px;
  height: 200px;
  border: 1px solid red;
}
.child {
  height: 50px;
  border: 1px solid green;
}
.elem1 {
  width: 300px;
  flex-grow: 0;
}
.elem2 {
  width: 200px;
  flex-grow: 3;
}
.elem3 {
  width: 100px;
  flex-grow: 2;
}

Задание 3

html<div class="parent">
  <div class="child elem1">1</div>
  <div class="child elem2">2</div>
  <div class="child elem3">3</div>
  <div class="child elem4">4</div>
</div>

css.parent {
  display: flex;
  width: 700px;
  height: 200px;
  border: 1px solid red;
}
.child {
  height: 50px;
  border: 1px solid green;
}
.elem1 {
  width: 200px;
  flex-grow: 0;
}
.elem2 {
  width: 200px;
  flex-grow: 0;
}
.elem3 {
  width: 100px;
  flex-grow: 1;
}
.elem4 {
  width: 100px;
  flex-grow: 1;
}