.masthead { background-color: red; }

body.light-theme .signal-list ul.signals li.group>ul.signals>li.signal.level-critical .icon-signal {
    border: 2px solid #ff5081;
    border-radius: 6px;
    padding: 2px;
    width: 5px;
    height: 5px;
    margin-left: 5px;
    margin-right: 5px;
}

body.dark-theme .signal-list ul.signals li.group>ul.signals>li.signal.level-critical .icon-signal {
    border: 2px solid #ff5081;
    border-radius: 6px;
    padding: 2px;
    width: 5px;
    height: 5px;
    margin-left: 5px;
    margin-right: 5px;
}