block @(0,0) 1000x30
  block @(0,0) 1000x30 <html>
    block @(0,0) 1000x30 <body>
      block @(0,0) 600x30 <div>
        block @(0,0) 100x30 <div>
        block @(100,0) 167x30 <div>
        block @(267,0) 333x30 <div>
