text: const Client = require('./client');
  
  const Contents = (() => {
      const onLoad = () => {
          Client.activateByClientType('header');
          const content = document.getElementById('content');
          if (!content) {
              return;
          }
          let new_class = '';
          const content_class = document.getElementById('content_class');
          if (content_class) {
              new_class = content_class.textContent;
          }
          // This is required for our css to work.
          content.className = new_class;
      };
  
      return {
          onLoad,
      };
  })();
  
  module.exports = Contents;
  