userChrome.css・userContent.cssスレ Part7

[188 名無しさん＠お腹いっぱい。 2017/11/20(月) 12:18:04.30 ID:EI4o1zsL0]

.tabbrowser-tab::after,
.tabbrowser-tab::before {
opacity: 0 !important;
border-image: unset !important;
border-image-slice: unset !important;
width: unset !important;
}