/* Hide border on tab bar, force its state to 'scroll', adjust margin-left for width of scrollbar. */ 
#tabbar { border: 0; overflow-y: scroll !important; margin-left: -12px !important; scrollbar-width: auto; }

/* Hide .twisty and adjust margins so favicons have 7px on left. */
tab-item .twisty {
    visibility: hidden;
    margin-left: -12px;
}

/* Push tab labels slightly to the right so they're completely hidden in collapsed state */
tab-item .label {
    margin-left: 7px;
}

/* Hide close buttons on tabs. */
tab-item .closebox {
    visibility: collapse;
}

tab-item:hover .closebox {
    visibility: initial;
}

/* Hide sound playing/muted button. */
.sound-button::before {
    display: none !important;
}