h1,h2,h3,h4 { text-align: left; }

p,table { text-align: justify; }

div.floating {
  padding: 0;
  margin:  0;
  margin-left: auto;
  margin-right: auto;
  max-width:   31em;
  height:  auto;
  /*background-color:#fcfcfc;*/
}

pre { background-color: #e0ffff; margin: 20px; padding: 6px; }