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html { overflow: hidden }
body { margin: 0 }
video {
display: inline-block;
width: 320px;
height: 180px;
position: relative;
outline: 1px solid black;
}
/* Reset all css properties that can possibly be set on ::cue (8.2.1. The ::cue pseudo-element) to override any system styles. */
::cue {
color: green;
opacity: 1;
visibility: visibile;
text-decoration: none;
text-shadow: none;
background: rgba(0,0,0,0.8);
outline: none;
font: 9px Ahem, sans-serif; /* Use Ahem because it improves test reliability. */
white-space: pre-line;
text-combine-upright: none;
ruby-position: alternate;
}