HTMLCSS 10 Concept

{
  type: HTMLCSS10
  {
   type: head;
   meta: ....;
   meta: ....;
   use: './main.css'
  },
  {
    type: body;
    children: [
      {
       type: rect;
       width: 500px;
       height: 500px;
       bgColor: rgb(0,0,0,0)
       children: [
        {
          type: button;
          width: 150px;
          height: 30px;
          onClick: () => {
           alert('clicked')
          }
          bgColor: green;
        },
        {
          type: button;
          width: 150px;
          height: 30px;
          onClick: () => {
           alert('cancel')
          }
          bgColor: red;
        }
      ]
    }
   ]
  }
}