Rambox-CE/ext/packages/ext-theme-base/sass/src/slider/Multi.scss

.#{$prefix}slider {
    outline: none; // prevent dotted outline in firefox when focused
    position: relative;
}

.#{$prefix}slider-inner {
    position:relative;
    left:0;
    top:0;
    overflow:visible;
    .#{$prefix}slider-vert & {
        background: repeat-y 0 0;
    }
}

.#{$prefix}slider-thumb {
    position: absolute;
    background: no-repeat 0 0;
    .#{$prefix}slider-horz & {
        left: 0;
    }
    .#{$prefix}slider-vert & {
        bottom: 0;
    }
}