Rolling forward https://codereview.chromium.org/1155683008/ which was

third_party/polymer/v0_8/components/paper-slider/paper-slider.css

-/**
-@license
-Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE
-The complete set of authors may be found at http://polymer.github.io/AUTHORS
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS
-*/
-
-:host {
-  display: inline-block;
-  width: 200px;
-  cursor: default;
-  -webkit-user-select: none;
-  -moz-user-select: none;
-  -ms-user-select: none;
-  user-select: none;
-  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
-}
-
-:host(:not([disabled])) #sliderBar::shadow #activeProgress {
-  background-color: var(--paper-slider-active-color, --google-blue-700);
-}
-
-:host(:not([disabled])) #sliderBar::shadow #secondaryProgress {
-  background-color: var(--paper-slider-secondary-color, --google-blue-300);
-}
-
-:host([disabled]) #sliderBar::shadow #activeProgress {
-  background-color: var(--paper-slider-disabled-active-color, --google-grey-500);
-}
-
-:host([disabled]) #sliderBar::shadow #secondaryProgress {
-  background-color: var(--paper-slider-disabled-secondary-color, --google-grey-300);
-}
-
-:host(:focus) {
-  outline: none;
-}
-
-#sliderContainer {
-  position: relative;
-  width: calc(100% - 32px);
-  height: 32px;
-}
-
-#sliderContainer.editable {
-  float: left;
-  width: calc(100% - 72px);
-  margin: 12px 0;
-}
-
-.bar-container {
-  position: absolute;
-  top: 0;
-  left: 16px;
-  height: 100%;
-  width: 100%;
-  overflow: hidden;
-}
-
-.ring > .bar-container {
-  left: 20px;
-  width: calc(100% - 4px);
-  transition: left 0.18s ease, width 0.18s ease;
-}
-
-.ring.expand:not(.pin) > .bar-container {
-  left: 30px;
-  width: calc(100% - 14px);
-}
-
-.ring.expand.dragging > .bar-container {
-  transition: none;
-}
-
-#sliderBar {
-  position: absolute;
-  top: 15px;
-  left: 0;
-  height: 2px;
-  width: 100%;
-  padding: 8px 0;
-  margin: -8px 0;
-}
-
-.ring #sliderBar {
-  left: -4px;
-  width: calc(100% + 4px);
-}
-
-.ring.expand:not(.pin) #sliderBar {
-  left: -14px;
-  width: calc(100% + 14px);
-}
-
-.slider-markers {
-  position: absolute;
-  top: 15px;
-  left: 15px;
-  height: 2px;
-  width: calc(100% + 2px);
-  box-sizing: border-box;
-  pointer-events: none;
-}
-
-.slider-markers::after,
-.slider-marker::after {
-  content: "";
-  display: block;
-  width: 2px;
-  height: 2px;
-  border-radius: 50%;
-  background-color: black;
-}
-
-.transiting #sliderBar::shadow #activeProgress {
-  transition: -webkit-transform 0.08s ease;
-  transition: transform 0.08s ease;
-}
-
-#sliderKnob {
-  @apply(--layout-center-justified);
-  @apply(--layout-center);
-  @apply(--layout-horizontal);
-
-  position: absolute;
-  left: 0;
-  top: 0;
-  width: 32px;
-  height: 32px;
-}
-
-.transiting > #sliderKnob {
-  transition: left 0.08s ease;
-}
-
-#sliderKnob:focus {
-  outline: none;
-}
-
-#sliderKnob.dragging {
-  transition: none;
-}
-
-.snaps > #sliderKnob.dragging {
-  transition: -webkit-transform 0.08s ease;
-  transition: transform 0.08s ease;
-}
-
-#sliderKnobInner {
-  width: 12px;
-  height: 12px;
-  box-sizing: border-box;
-  -moz-box-sizing: border-box;
-  border-radius: 50%;
-  background-color: var(--paper-slider-knob-color, --google-blue-700);
-  transition-property: height, width, background-color, border;
-  transition-duration: 0.1s;
-  transition-timing-function: ease;
-}
-
-.expand:not(.pin) > #sliderKnob > #sliderKnobInner {
-  width: 100%;
-  height: 100%;
-  -webkit-transform: translateZ(0);
-  transform: translateZ(0);
-}
-
-.ring > #sliderKnob > #sliderKnobInner {
-  background-color: transparent;
-  border: 2px solid #c8c8c8;
-}
-
-#sliderKnobInner::before {
-  background-color: var(--paper-slider-pin-color, --google-blue-700);
-}
-
-.pin > #sliderKnob > #sliderKnobInner::before {
-  content: "";
-  position: absolute;
-  top: 0;
-  left: 0;
-  width: 26px;
-  height: 26px;
-  margin-left: 3px;
-  border-radius: 50% 50% 50% 0;
-  -webkit-transform: rotate(-45deg) scale(0) translate(0);
-  transform: rotate(-45deg) scale(0) translate(0);
-}
-
-#sliderKnobInner::before,
-#sliderKnobInner::after {
-  transition: -webkit-transform .2s ease, background-color .18s ease;
-  transition: transform .2s ease, background-color .18s ease;
-}
-
-.pin.ring > #sliderKnob > #sliderKnobInner::before {
-  background-color: #c8c8c8;
-}
-
-.pin.expand > #sliderKnob > #sliderKnobInner::before {
-  -webkit-transform: rotate(-45deg) scale(1) translate(17px, -17px);
-  transform: rotate(-45deg) scale(1) translate(17px, -17px);
-}
-
-.pin > #sliderKnob > #sliderKnobInner::after {
-  content: attr(value);
-  position: absolute;
-  top: 0;
-  left: 0;
-  width: 32px;
-  height: 26px;
-  text-align: center;
-  color: var(--paper-slider-font-color, #fff);
-  font-size: 10px;
-  -webkit-transform: scale(0) translate(0);
-  transform: scale(0) translate(0);
-}
-
-.pin.expand > #sliderKnob > #sliderKnobInner::after {
-  -webkit-transform: scale(1) translate(0, -17px);
-  transform: scale(1) translate(0, -17px);
-}
-
-/* editable: paper-input */
-.slider-input {
-  width: 40px;
-  float: right;
-  overflow: hidden;
-}
-
-.slider-input::shadow input {
-  /* FIXME(ffu): should one be able set text-align directly on paper-input? */
-  text-align: center;
-}
-
-/* disabled state */
-#sliderContainer.disabled {
-  pointer-events: none;
-}
-
-.disabled > #sliderKnob > #sliderKnobInner {
-  width: 8px;
-  height: 8px;
-  background-color: var(--paper-slider-disabled-knob-color, --google-grey-500);
-}
-
-.disabled.ring > #sliderKnob > #sliderKnobInner {
-  background-color: transparent;
-}