css - How to make flexbox children 100% height of their parent? -


i'm trying fill vertical space of flex item inside flexbox. 

.container {    height: 200px;    width: 500px;    display: -moz-box;    display: -webkit-flexbox;    display: -ms-flexbox;    display: -webkit-flex;    display: -moz-flex;    display: flex;    -webkit-flex-direction: row;    -moz-flex-direction: row;    -ms-flex-direction: row;    flex-direction: row;  }  .flex-1 {    width: 100px;    background-color: blue;  }  .flex-2 {    position: relative;    -moz-box-flex: 1;    -webkit-flex: 1;    -moz-flex: 1;    -ms-flex: 1;    flex: 1;    background-color: red;  }  .flex-2-child {    height: 100%;    width: 100%;    background-color: green;  }
<div class="container">    <div class="flex-1"></div>    <div class="flex-2">      <div class="flex-2-child"></div>    </div>  </div>

and here's jsfiddle

flex-2-child doesn't fill required height except in 2 cases where:

  1. flex-2 has height of 100% (which weird because flex item has 100% default + buggy in chrome)
  2. flex-2-child has position absolute inconvenient

this doesn't work in chrome or firefox currently.

i have answered similar question here.

i know have said position: absolute; inconvenient works. see below further information on fixing resize issue.

also see jsfiddle demo, although have added webkit prefixes open in chrome.

you have 2 issues deal separately.

  1. getting child of flex-item fill height 100%
    • set position: relative; on parent of child.
    • set position: absolute; on child.
    • you can set width/height required (100% in sample).
  2. fixing resize scrolling "quirk" in chrome
    • put overflow-y: auto; on scrollable div.
    • the scrollable div must have explicit height specified. sample has height 100% if none applied can specify height: 0;

see answer more information on scrolling issue.


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