Is it possible to build this header layout using Flexbox CSS?-CodePudding

I've been trying to figure out how to make this layout possible in CSS Flexbox, so far cannot figure out a way to make it work that doesn't involve hiding a duplicate to show only on desktop. Is this possible to do using Flexbox?

Image example of what I'm trying to achieve:

CodePudding user response：

A solution in grid would be a lot nicer and this is a working example the breakpoint for mobile version happens in 800px,

I suggest you read the Grid Area Template system it make these kind of layouts in very modern and nice way

.parent{
  width: 100%;
  height:100vh;
  display: grid;
  grid-template-columns: 200px 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  grid-template-areas: "blue red""blue red""green green";
  gap: 10px;
}

.blue{
  grid-area: blue;
  width: 200px;
  background: blue;
}

.red{
  grid-area: red;
  width: 100%;
  background: red;
}

.green{
  grid-area: green;
  width: 100%;
  height: 100%;
  background: green;
}

@media screen and (max-width: 800px){
  .parent{
 grid-template-areas:    "blue red"
                         "blue green";
     grid-template-rows: 1fr 1fr;
  }
}

<div >
  <div ></div>
  <div ></div>
  <div ></div>
</div>