css/css-flexbox/flexbox-flex-basis-content-004b.html

<!DOCTYPE html>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
  <title>
    CSS Test: Testing that used "flex-basis: content" is treated as
    "max-content" when calculating flex base size
  </title>
  <meta charset="utf-8">
  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
  <link rel="help" href="https://www.w3.org/TR/css-flexbox-1/#flex-base-size">
  <link rel="match" href="flexbox-flex-basis-content-004-ref.html">
  <style>
  .container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    /* flex container has an extremely-constrained height (and items will
       overflow vertically). This is intentional, as part of stress-testing
       item sizing. We add a large margin-bottom so that overflowing
       items don't overlap between examples. */
    height: 1px;
    margin-bottom: 49px;
  }

  .item {
    /* We give all flex items a used "flex-basis" of "content"
       (from "flex-basis:auto" and default "width:auto").
       We also give them zero flex-grow, flex-shrink, and min-main-size, so
       that the flex base size entirely determines the flex item's size. */
    flex: 0 0 auto;
    min-height: 0;
    border: 2px solid teal;
  }
  ib {
    display: inline-block;
    background: blue;
    border: 1px solid gray;
    width: 15px;
    height: 10px;
  }
  float {
    float: left;
    background: fuchsia;
    border: 1px solid gray;
    width: 15px;
    height: 10px;
  }
  canvas {
    background: brown;
    border: 1px solid gray;
  }
  .innerFlex {
    display: flex;
    flex-direction: column;
  }
  innerItem {
    background: salmon;
    border: 1px solid gray;
    height: 10px;
    width: 15px;
    flex: none;
  }
  </style>
</head>
<body>
<!-- This test exists for symmetry with the previous set of tests
     (flexbox-flex-basis-content-003*). Those previous tests check how
     "flex-basis:content" is resolved to a flex base size, in the inline axis,
     when the container's size is constrained in that axis. This test does the
     same, but for the *block* axis, using flex-direction:column. As with the
     previous set of tests, the expectation here is that we should use the
     item's max-content size as its flex base size. Note that there's a bit
     less subtlety here because intrinsic sizes (min-content, max-content) are
     typically all the same in the block axis.
-->

<!-- Flex item has several inline-blocks
     (no spaces, to avoid any text-layout dependency): -->
<div class="container">
  <div class="item"><ib></ib><ib></ib><ib></ib></div>
</div>

<!-- Flex item has several floats: -->
<div class="container">
  <div class="item">
    <float></float>
    <float></float>
    <float></float>
  </div>
</div>

<!-- Flex item has several inline replaced elements:
     (no spaces, to avoid any text-layout dependency): -->
<div class="container">
  <div class="item">
    <canvas width="15" height="10"></canvas
    ><canvas width="15" height="10"></canvas
    ><canvas width="15" height="10"></canvas>
  </div>
</div>

<!-- Flex item *is* a replaced element: -->
<div class="container">
  <canvas class="item" width="25" height="10"></canvas>
</div>

<!-- Flex item is itself a flex container: -->
<div class="container">
  <div class="item innerFlex">
    <innerItem></innerItem>
    <innerItem></innerItem>
    <innerItem></innerItem>
  </div>
</div>

<!-- Flex item is itself a multi-line flex container: -->
<div class="container">
  <div class="item innerFlex" style="flex-wrap: wrap">
    <innerItem></innerItem>
    <innerItem></innerItem>
    <innerItem></innerItem>
  </div>
</div>

</body>
</html>