userContent.css

@namespace url(http://www.w3.org/1999/xhtml);

/* Odstranění pole vyhledávání na novém panelu */
@-moz-document url-prefix("about:newtab") {
    #newtab-search-form {
        display: none !important;
    }
}

/* Zakázání tagu marguee – běžící text */
marquee {
    -moz-binding: none; display: block; height: auto !important;
}

/* Vynucení podtržení všech odkazů na webech */
a {
    text-decoration: underline !important
}

/* Změna kurzoru nad JavaScriptovými odkazy */
a[href^="javascript:"] {
    cursor: move;
} 

:-moz-dropdown-list {
    border: 1px solid black !important;
    border-top-style: solid !important;
}

marquee {
    -moz-binding: none; display: block; height: auto !important;
}

:link:hover[target="_blank"],:visited:hover[target="_blank"] {
    color: white !important; background: red !important;
}
:link:hover[target="_new"],:visited:hover[target="_new"] {
    color: white !important; background: red !important;
}

.moz-text-html font, .moz-text-html div, .moz-text-html body {
/*     font-size: inherit !important; */
    font-size: inherit !important;
    font-family: inherit !important;
    color: inherit !important;
    background-color: inherit !important;
    background-image: inherit !important;
    text-align: inherit !important;
    text-indent: inherit !important;
}


/* Quote Levels Colors */
blockquote[type=cite] {
    color: navy !important; background-color: RGB(245,245,245) !important;
}
blockquote[type=cite] blockquote {
    color: maroon !important; background-color: RGB(235,235,235) !important;
}
blockquote[type=cite] blockquote blockquote {
    color: green !important; background-color: RGB(225,225,225) !important;
}
blockquote[type=cite] blockquote blockquote blockquote {
    color: purple !important; background-color: RGB(215,215,215) !important;
}
blockquote[type=cite] blockquote blockquote blockquote blockquote {
    color: teal !important; background-color: RGB(205,205,205) !important;
}

blockquote[type=cite] {
    color: navy !important;
    background-color: RGB(235,235,235) !important; 
    border-color: navy !important;
    border-left: 3px solid !important;
    border-right: 3px solid !important;
}
blockquote[type=cite] blockquote {
    color: maroon !important;
    background-color: RGB(225,225,225) !important;
    border-color: maroon !important;
    border-left: 3px solid !important;
    border-right: 3px solid !important;
}

span[_moz_quote=true] {
    color: navy !important;
    background-color: RGB(235,235,235) !important;
    display: block;
    width: 82ch !important;
}

/* Change color of active tab */
tab[selected="true"] {
    background-color: rgb(255,1,234) !important;
    color: black !important;
}

/* Change color of normal tabs */
tab {
    background-color: rgb(200,196,188) !important;
    color: gray !important;
}