07/12/31 20:38:15 gKGisnUL0
>>397
userContent.css か Stylish に以下のコードを記述
@-moz-document domain("youtube.com") {
#mainContent { width: 875px !important; }
#mainContent tr { display: inline; }
#mainContent td { float: left; }
#mainContent table:after { clear: both; }
#sideContentWithPVA { display: none !important; }
}