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HTML

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Adding Classes

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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HTML 

              
                <input id="slider" name="slider" type="range" value=0>
<label for="slider">0</label>




<a class="twitter-link" href="https://twitter.com/phil_osophie" target="_blank" >by @phil_osophie</a>
!

CSS 

              
                html, body {
  margin: 0
  height: 100%
}

body
  display: flex
  justify-content: center
  align-items: center
  background-color: #a9cbee
  
track()
  width: 100%
  height: 20px
  background: #eee
  border-radius: 10px
  box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4)
  cursor: pointer
  
thumb()
  border: none
  height: 50px
  width: 50px
  background-color: transparent
  background-image: url(https://storage.googleapis.com/pw-stuff/thumbs-sprite.png)
  background-position: 0 0
  background-size: cover
  transform: scale(1.9) rotateZ(var(--thumb-rotate, 10deg))
  cursor: pointer

thumbActive()
  background-position: 100% 0px
  transform: scale(2.0) rotateZ(var(--thumb-rotate, 10deg))

input[type="range"]
  -webkit-appearance: none
  background: transparent
  width: 90%
  max-width: 500px
  outline: none

  &:focus,
  &:active,
  &::-moz-focus-inner,
  &::-moz-focus-outer
    border: 0
    outline: none

  &::-moz-range-thumb
    thumb()
    
  &::-moz-range-thumb:active
    thumbActive()
    
  &::-moz-range-track
    track()
  
  &::-moz-range-progress
    height: 20px
    background: #4685d7
    border-radius: 10px
    cursor: pointer
    
  &::-webkit-slider-thumb
    thumb()
    margin-top: -15px
    -webkit-appearance: none
    
  &::-webkit-slider-thumb:active
    thumbActive()
    
  &::-webkit-slider-runnable-track
    track()
    -webkit-appearance: none
   
label
  background: #eee
  border-radius: 50%
  box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4)
  padding: 14px
  margin-left: 10px
  font-family: Roboto, 'Helvetica Neue', Arial
  font-size: 20px
  width: 25px
  text-align: center
  color: darken(#4685d7, 20%)
  font-weight: bold
  content: ''
  
  
  
.twitter-link
  position: absolute
  bottom: 4px
  margin: auto
  font-family: sans-serif
  font-size: 12px
  color: rgba(0, 0, 0, 0.6)
!

JS 

              
                const input = document.querySelector("input");
const label = document.querySelector("label");

input.addEventListener("input", event => {
  const value = Number(input.value) / 100;
  input.style.setProperty("--thumb-rotate", `${value * 720}deg`);
  label.innerHTML = Math.round(value * 50);
});
!
999px

Console