LCUI

<?xml version="1.0" encoding="UTF-8" ?>
<lcui-app>
  <resource type="text/css">
    #text-hello {
      color: #8cc63f;
      padding: 25px;
      margin: 25px;
      border: 1px solid #000;
      background-color: #fafafa;
    }
    #btn-hello, #input-hello {
      margin: 0 0 0 25px;
    }
  </resource>
  <ui>
    <widget id="text-hello" type="textview">Hello, World!</widget>
    <widget id="input-hello" type="textedit">Hello, World!</widget>
    <widget id="btn-hello" type="button">Submit</widget>
  </ui>
</lcui-app>