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htmlcssmedia-queriesmultiple-columnsfluid-layout

CSS Columns stacking for fluid layout?

I have three columns; left, middle and right and they are in a div that is 100% width of the screen. How in a media query, when the screen size is reduced, can I get the middle column to stay on the top, the left column to go underneath and then the right column to go underneath that? I've attached a CodePen as well as displaying the HTML and CSS below: https://codepen.io/Macast/pen/jZworE . Any help will be greatly appreciated! I have no idea how to go about this.

This is what I'm looking for: enter image description here

HTML:

<body>
<div class="columnContainer">
    <div class="leftColumn" style="background-color:#aaa;">
      <h2>Left Column</h2>
    </div>
    <div class="middleColumn" style="background-color:#bbb;">
      <h2>Middle Column</h2>
    </div>
    <div class="rightColumn" style="background-color:#ccc;">
      <h2>Right Column</h2>
    </div>
  </div>
</body>
</html>

CSS:

* {
    box-sizing: border-box;
}

body {
    margin: 0;
}

.columnContainer {
    width: 100%;
}

.leftColumn {
    float: left;
    width: 33.33%;
    padding: 10px;
    height: 200px;
    text-align: center;
}

.middleColumn {
    float: left;
    width: 33.33%;
    padding: 10px;
    height: 200px;
    text-align: center;
}

.rightColumn {
    float: left;
    width: 33.33%;
    padding: 10px;
    height: 200px;
    text-align: center;
}

.columnContainer:after {
    content: "";
    display: table;
    clear: both;
}

/* Media Query */
@media (min-width: 320px) and (max-width: 480px) {
    /* Column Stacking Here */
}
Solution

  • You can use flex + order;

    * {
    box-sizing: border-box;
}

body {
    margin: 0;
}

.columnContainer {
    width: 100%;
    display: flex;
}

.leftColumn {
    width: 33.33%;
    padding: 10px;
    height: 200px;
    margin: 0 auto;
    text-align: center;
}

.middleColumn {
    width: 33.33%;
    padding: 10px;
    height: 200px;
    margin: 0 auto;
    text-align: center;
}

.rightColumn {
    width: 33.33%;
    padding: 10px;
    height: 200px;
    margin: 0 auto;
    text-align: center;
}

/* Media Query */
@media (min-width: 320px) and (max-width: 480px) {
  /* Column Stacking Here */

  .columnContainer {
      flex-direction: column;
  }

  .leftColumn {
      order: 2;
  }

  .middleColumn {
      order: 1;
  }

  .rightColumn {
      order: 3;
  }

}
    <body>
<div class="columnContainer">
    <div class="leftColumn" style="background-color:#aaa;">
      <h2>Left Column</h2>
    </div>
    <div class="middleColumn" style="background-color:#bbb;">
      <h2>Middle Column</h2>
    </div>
    <div class="rightColumn" style="background-color:#ccc;">
      <h2>Right Column</h2>
    </div>
  </div>
</body>
</html>