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Include blue (highlight) line at top of active or selected tab using CSS code

  • I've been attempting to enter CSS code using the Stylus extension to add a thin blue line at the top of the active or selected tab.

    I've tried all of the following (which I would expect to work in any other browser) but no luck.

    Incidentally I am using (enabled) the "dark" theme native to Opera and would like to better observe the active tab since it is not that easy to see in this theme.

    ======================================================
    CSS code I've tried:
    /.tabbrowser-tab[selected="true"] {
    background-image: linear-gradient(rgba(105,105,1005,.96), rgba(05,05,05,.85) 25%),
    linear-gradient(-moz-dialog, -moz-dialog) !important;
    color: white !important;}
    /

    /.tabbrowser-tab[selected="true"] {
    background-image: linear-gradient(rgba(105,105,1005,.96), rgba(05,05,05,.85) 25%) !important;}
    /

    /.tabbrowser-tab[selected="true"] .tab-line{ background-color: #0d00ff !important;/

    /.tab-line{ background-color: red !important; }/

    /.tabbrowser-tab[selected="true"] .tab-line{ background-color: red !important; }/

    .tabbrowser-tab[selected="true"] {background-image: linear-gradient(rgba(105,105,1005,.96), rgba(05,05,05,.85) 25%) !important; }

    .tabbrowser-tab[active="true"] {background-image: linear-gradient(rgba(105,105,1005,.96), rgba(05,05,05,.85) 25%) !important; }

    ====================================================

    Absent getting what I want via CSS code --- I've attempted to find optional browser themes in Opera -- but not able to find anything on this.

    Assuming I am unable to add a red line at the top of the active tab in the Opera native "dark" theme ---- Where can I find ALTERNATE OPTIONAL THEMES for the Opera browser?

    Thanks in advance for any help 🙂

  • @lakrsrool You can't change Opera's UI color.

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