4.5.2.2.3. CssLayout
CssLayout is a container that enables full control over placement and styling of enclosed components using CSS.
XML-name of the component: cssLayout.
Below is an example of using cssLayout for simple responsive screen.
Displaying components on a wide screen:
 
 
  Displaying components on a narrow screen:
 
 
  Screen’s XML-descriptor:
<cssLayout responsive="true"
           stylename="responsive-container"
           width="100%">
    <vbox margin="true"
          spacing="true"
          stylename="group-panel">
        <textField caption="Field One" width="100%"/>
        <textField caption="Field Two" width="100%"/>
        <button caption="Button"/>
    </vbox>
    <vbox margin="true"
          spacing="true"
          stylename="group-panel">
        <textField caption="Field Three" width="100%"/>
        <textField caption="Field Four" width="100%"/>
        <button caption="Button"/>
    </vbox>
</cssLayout>Content of modules/web/themes/halo/halo-ext.scss file (see Extending an Existing Theme for how to create this file):
@import "../halo/halo";
@mixin halo-ext {
  @include halo;
  .responsive-container {
    &[width-range~="0-900px"] {
      .group-panel {
        width: 100% !important;
      }
    }
    &[width-range~="901px-"] {
      .group-panel {
        width: 50% !important;
      }
    }
  }
}responsive attribute indicates that the component should react on change in the available space. It is false by default.