i got following HTML structure:

Demo here

<div id="wrapper">

  <div id="header">
    <i>Header</i>
  </div>
  
  <div id="content">
    <i>Content</i>
  </div>
  
  <div id="footer">
      <i>Footer</i>
  </div>

</div>

#wrapper{
  margin: 0;
  height: 100vh;
  max-height: 100vh;
  /* overflow: hidden; */
display: flex;
  flex-direction: column;
}

#header{
  background: blue;
  height: 3rem;
}

#content{
  background: red;
  flex-grow: 1;
}

#footer{
  background: green;
  height: 3rem;
}

My problem is that when the div of the content gets too large, the wrapper ignores his max-height and gets a scrollbar. What i want is that the content div instead gets the scrollbar and the wrapper holds it's height.

Demo of content to large

CodePudding user response：

You have to make the wrapper overflow: hidden so scroll-bar is disabled for that div. Next, You can add the overflow: auto to content to make it scrollable if content goes outside.

#wrapper{
  margin: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: red;
  overflow: hidden;
}
#content{
  flex-grow: 1;
  overflow: auto;
}

CodePudding user response：

You don't need a flexbox here, since all the elements go after each other. In your example, you can use a max-height on the content itself, and use a overflow: scroll to prevent large text to not show up

wrapper {
  margin: 0;
  height: 100vh;
  /* overflow: hidden; */
}

#header {
  background: blue;
  height: 3rem;
}

#content {
  background: red;
  height: calc(100vh - 6em);
  overflow: scroll;
}

#footer {
  background: green;
  height: 3rem;
}

<div id="wrapper">

  <div id="header">
    <i>Header</i>
  </div>

  <div id="content">
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  </div>

  <div id="footer">
    <i>Footer</i>
  </div>

</div>