+ ret += '0% { background-color: rgba(0,0,0,0.7); }'
+ ret += '50% { background-color: rgba(0,0,0,0.7); }'
+ ret += '50.001% { background-color: rgba(255,255,255,0.7); }'
+ ret += '100% { background-color: rgba(255,255,255,0.7); }'
+ ret += '}'
+ ret += '.ann_box {'
+ ret += 'z-index: 5;'
+ ret += 'position: absolute;'
+ ret += 'border: 1px solid rgba(0,0,0,0.1);'
+ ret += 'outline: 1px solid rgba(255,255,255,0.1);' # in case there's a black background
+ ret += '}'
+ ret += '.ann_tag {'
+ ret += 'z-index: 10;'
+ ret += 'position: absolute;'
+ ret += 'font-size: 8px;'
+ ret += 'white-space: pre;'
+ ret += 'background: rgba(255,255,255,0.4);'
+ ret += '-ms-user-select: none;'
+ ret += '-webkit-user-select: none;'
+ ret += '-moz-user-select: none;'
+ ret += 'user-select: none;'