body
{ margin: 0; }
#player, #log-container
{ float: left;
  width: 800px;
  height: 500px; }
#log-container
{ font: 14px monospace;
  color: white;
  background: #333;
  overflow: auto; }
#log
{ list-style-type: none;
  margin: 0;
  padding: 1ex 1em; }
#log li
{ margin: .5ex 0;
  word-wrap: break-word; }
#log li.first
{ margin-top: 1ex; }
#log li span.time
{ font-size: 12px;
  color: #808080;
  margin-right: 1em; }
#log span.seconds
{ color: #999; }
#log span.value
{ color: #ddf; }
#log span.error
{ background: #422;
  color: #e88;
  padding: .2ex 0 .4ex; }

body
{ margin: 0; }
#player, #log-container
{ float: left;
  width: 800px;
  height: 450px; }
#log-container
{ font: 14px monospace;
  color: white;
  background: #333;
  overflow: auto; }
#log
{ list-style-type: none;
  margin: 0;
  padding: 1ex 1em; }
#log li
{ margin: .5ex 0;
  word-wrap: break-word; }
#log li.first
{ margin-top: 1ex; }
#log li span.time
{ font-size: 12px;
  color: #808080;
  margin-right: 1em; }
#log span.seconds
{ color: #999; }
#log span.value
{ color: #ddf; }
#log span.error
{ background: #422;
  color: #e88;
  padding: .2ex 0 .4ex; }

Use exact video size in HTML.
Use exact video size in HTML.
