CSS for Multiple Sliders using Re-Com

sliders.cljs

(ns devcards.sliders
  (:require [re-com.core :as rc]
            [reagent.core :as r])
  (:require-macros
   [devcards.core :as dc :refer [defcard-rg]]))

(def rangeatom (r/atom 50))
(def rangeatom2  (r/atom 5))

(defcard-rg sliders
  [:div
   [rc/slider 
    :class "multirange original"
    :model rangeatom
    :on-change #(reset! rangeatom %)]
   [rc/slider 
    :class "multirange ghost"
    :model rangeatom2
    :on-change #(reset! rangeatom2 %)]
   ])

sliders.css

@supports (--css: variables) {
	input[type="range"].multirange {
		padding: 0;
		margin: 0;
		display: inline-block;
		vertical-align: top;
	}

	input[type="range"].multirange.original {
		position: absolute;
	}

		input[type="range"].multirange.original::-webkit-slider-thumb {
			position: relative;
			z-index: 2;
		}

		input[type="range"].multirange.original::-moz-range-thumb {
			transform: scale(1); /* FF doesn't apply position it seems */
			z-index: 1;
		}

		input[type="range"].multirange::-moz-range-track {
			border-color: transparent; /* needed to switch FF to "styleable" control */
		}

	input[type="range"].multirange.ghost {
		position: relative;
		background: var(--track-background);
		--track-background: linear-gradient(to right,
				transparent var(--low), var(--range-color) 0,
				var(--range-color) var(--high), transparent 0
			) no-repeat 0 45% / 100% 40%;
		--range-color: hsl(190, 80%, 40%);
	}

		input[type="range"].multirange.ghost::-webkit-slider-runnable-track {
			background: var(--track-background);
		}

		input[type="range"].multirange.ghost::-moz-range-track {
			background: var(--track-background);
		}

}

Allows two sliders to sit on same track

If you use reagent/track it'd be possible to have the on-change fn's react to the value of both reactions so that the sliders could restrict each other's motion

Might be cool as an option to component, for now just an example

this approach works well, would be a good extension of the re-com slider