Pure CSS Switches with Custom Properties

index.html

<div class="page">
  <div class="page__demo">
    <div class="main-container">
      <div class="page__container">   
        <label class="switch switch_type1" role="switch">
          <input type="checkbox" class="switch__toggle" checked>
          <span class="switch__label"></span>
        </label>
        <label class="switch switch_type2" role="switch">
          <input type="checkbox" class="switch__toggle">
          <span class="switch__label"></span>
        </label>        
        <label class="switch switch_type3" role="switch">
          <input type="checkbox" class="switch__toggle" checked>
          <span class="switch__label"></span>
        </label>                
      </div>
    </div>
  </div>
  <footer class="footer">
    <div class="main-container footer__container">
      <a href="http://stas-melnikov.ru/donate/" rel="noopener noreferrer" target="_blank">Liked? Please, look the page</a>     
      <a href="http://stas-melnikov.ru" class="melnik909" rel="noopener noreferrer" target="_blank">Developed by Stas Melnikov</a>
    </div>
  </footer>
</div>

pure-css-switches-with-custom-properties.markdown

Pure CSS Switches with Custom Properties

A Pen by Stas Melnikov on CodePen.

License.

style.css

.switch{
  --uiSwitchSize: var(--switchSize, 64px);
  --uiSwitchBgColor: var(--switchBgColor, #f1f1f1);
  --uiSwitchBgColorActive: var(--switchBgColorActive, #4ed164);
  --uiSwitchBorderColorActive: var(--switchBorderColorActive, #fff);
  --uiSwitchBorderColorFocus: var(--switchBgColorFocus, #43b556);
  --uiSwitchButtonBgColor: var(--switchButtonBgColor, #fff);  
  
  display: inline-block;
  position: relative;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.switch__label{
  display: block;
  width: 100%;
  height: 100%;
}

.switch__toggle{
  width: 0;
  height: 0;
  opacity: 0;
  
  position: absolute;
  top: 0;
  left: 0;
}

.switch__toggle:focus ~ .switch__label{
  box-shadow: 0 0 0 var(--uiSwitchThickFocus, 4px) var(--uiSwitchBorderColorFocus);
}

.switch__toggle:checked:focus ~ .switch__label{
  box-shadow: 0 0 0 var(--uiSwitchThickFocus, 4px) var(--uiSwitchBorderColorActive);
}

.switch__label:before, .switch__label:after{
  content: "";
  cursor: pointer;

  position: absolute;
  top: 0;
  left: 0;
}

.switch__label:before{
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  background-color: var(--uiSwitchBgColor);
}

.switch__label:after{
  top: 50%;
  z-index: 3;
  transition: transform .4s cubic-bezier(0.44,-0.12, 0.07, 1.15);
}

/* type 1 */

.switch_type1{
  --uiSwitchBorderRadius: var(--switchBorderRadius, 60px);
  
  width: var(--uiSwitchSize);
  height: calc((var(--uiSwitchSize) / 2));
  border-radius: var(--uiSwitchBorderRadius);    
  background-color: var(--uiSwitchBgColorActive);
}

.switch_type1 .switch__label{
  border-radius: var(--uiSwitchBorderRadius);    
}

.switch_type1 .switch__label:before{
  border-radius: var(--uiSwitchBorderRadius);
  transition: opacity .2s ease-out .1s, transform .2s ease-out .1s;
  transform: scale(1);
  opacity: 1;
}

.switch_type1 .switch__toggle:checked ~ .switch__label:before{
  transform: scale(0);
  opacity: .7;
}

.switch_type1 .switch__label:after{
  width: calc(var(--uiSwitchSize) / 2);
  height: calc(var(--uiSwitchSize) / 2);
  transform: translate3d(0, -50%, 0);
  
  background-color: var(--uiSwitchButtonBgColor);
  border-radius: 100%;
  box-shadow: 0 2px 5px rgba(0, 0, 0, .3);  
}

.switch_type1 .switch__toggle:checked ~ .switch__label:after{
  transform: translate3d(100%, -50%, 0);
}

/* type 2 */

.switch_type2{
  --uiSwitchIndent: var(--switchIndent, 8px);
  --uiSwitchBorderRadius: var(--switchBorderRadius, 60px);
  
  width: var(--uiSwitchSize);
  height: calc((var(--uiSwitchSize) / 2));
  border-radius: var(--uiSwitchBorderRadius);    
  background-color: var(--uiSwitchBgColorActive);
}

.switch_type2 .switch__label{
  border-radius: var(--uiSwitchBorderRadius);    
}

.switch_type2 .switch__label:before{
  border-radius: var(--uiSwitchBorderRadius);    
  transition: opacity .2s ease-out .1s, transform .2s ease-out .1s;
  transform: scale(1);
  opacity: 1;  
}

.switch_type2 .switch__toggle:checked ~ .switch__label:before{
  transform: scale(0);
  opacity: .7;
}

.switch_type2 .switch__toggle ~ .switch__label:after{
  width: calc((var(--uiSwitchSize) / 2) - calc(var(--uiSwitchIndent) * 2));
  height: calc((var(--uiSwitchSize) / 2) - calc(var(--uiSwitchIndent) * 2));
  transform: translate3d(var(--uiSwitchIndent), -50%, 0);
  
  background-color: var(--uiSwitchButtonBgColor);
  border-radius: 100%;
}

.switch_type2 .switch__toggle:checked ~ .switch__label:after{
  transform: translate3d(calc(var(--uiSwitchSize) - calc((var(--uiSwitchSize) / 2) - calc(var(--uiSwitchIndent) * 2)) - var(--uiSwitchIndent)), -50%, 0);
}

/* type 3 */

.switch_type3{
  --uiSwitchIndent: var(--switchIndent, 8px);
  
  width: var(--uiSwitchSize);
  height: calc((var(--uiSwitchSize) / 2));
  background-color: var(--uiSwitchBgColorActive);
}

.switch_type3 .switch__toggle:checked ~ .switch__label:before{
  background-color: var(--uiSwitchBgColorActive);
}

.switch_type3 .switch__label:after{
  width: calc((var(--uiSwitchSize) / 2) - calc(var(--uiSwitchIndent) * 2));
  height: calc((var(--uiSwitchSize) / 2) - calc(var(--uiSwitchIndent) * 2));
  transform: translate3d(var(--uiSwitchIndent), -50%, 0);
  background-color: var(--uiSwitchButtonBgColor);
}

.switch_type3 .switch__toggle:checked ~ .switch__label:after{
  transform: translate3d(calc(var(--uiSwitchSize) - calc((var(--uiSwitchSize) / 2) - calc(var(--uiSwitchIndent) * 2)) - var(--uiSwitchIndent)), -50%, 0);
}

/* demo styles for switch */

.switch{
  --switchSize: 128px;
  margin-top: 40px;
}

.switch_type2{
  --switchBgColorActive: #e85c3f;
  --switchBgColorFocus: #d54b2e;
}

/*
* demo page
*/

@media screen and (min-width: 768px){

  html{
    font-size: 62.5%;
  }
}

@media screen and (max-width: 767px){

  html{
    font-size: 50%;
  }
}

body{
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Open Sans, Ubuntu, Fira Sans, Helvetica Neue, sans-serif;
  font-size: 1.6rem;
  color: #222;
  background-color: #dfdfdf;
  margin: 0;
  -webkit-overflow-scrolling: touch;   
}

a{
  text-decoration: none;
  color: #222;
}

.page{
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
}

.page__demo{
  flex-grow: 1;
  display: flex;
}

.main-container{
  padding-left: 1rem;
  padding-right: 1rem;
  margin-left: auto;
  margin-right: auto;
  
  max-width: 1400px;
  display: flex;
}

.page__container{
  margin: auto;
  display: flex;
  flex-direction: column;
}

.footer{
  padding-top: 1rem;
  padding-bottom: 1rem;
  text-align: center;  
  font-size: 1.4rem;
}

@media screen and (min-width: 641px){

  .footer__container{
    display: flex;
    justify-content: space-between;
  }

  .melnik909{
    margin-left: 2rem;
  }  
}

@media screen and (max-width: 640px){

  .melnik909{
    display: none;
  } 
}