Stylish问题求助

@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
.toolbarbutton-text {
display:none!important;
}
.bookmark-item {
margin: 0px 1px 0px 0px !important;
padding:0px !important;
border: none !important;
-moz-appearance: none !important;
}
.bookmark-item > .toolbarbutton-icon {
opacity: 0.50 !important;
}
.bookmark-item:hover > .toolbarbutton-icon {
opacity: 1.00 !important;
margin-top: -1px !important;
-moz-transform: scale(1.25) !important;
image-rendering: optimizeQuality !important;
}
.bookmark-item:hover > .toolbarbutton-text {
display:none !important;
}
/*如果想鼠标划过显示文字把上面的display:none 改成 display:inline*/

.bookmark-item:hover > .toolbarbutton-icon
修改为.bookmark-item > .toolbarbutton-icon

升级Stylish了？