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HTML

CSS

CSS Base

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JavaScript

Babel includes JSX processing.

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HTML

              
                <button class="menu">
  <svg width="100px" height="100px" viewBox="0 0 100 100">
  <path id="pathA"
        d="M 30 40
           L 70 40
           C 90 40 90 75 60 85 
           A 40 40 0 0 1 20 20 
           L 70 70"/>
  <path id="pathB" d="M 30 50 L 70 50"/>
  <path id="pathC" 
        d="M 70 60 
           L 30 60 
           C 10 60 10 20 40 15 
           A 40 38 0 1 1 20 80 
           L 70 30"/>
</svg>
</button>
              
            
!

CSS

              
                button 
  background: transparent
  border: none
  svg 
    border: none
    display: block
    margin: 0 auto
    fill: transparent
    stroke: #000000
    stroke-width: 3px
    #pathA 
      animation: inA .5s ease-in-out forwards
      stroke-dashoffset: 280
      stroke-dasharray: 250 //line lenght
    
    #pathB 
      animation: inB .1s linear forwards
      stroke-dashoffset: 40
      stroke-dasharray: 40 //max 40
    
      
    #pathC 
      animation: inC .3s ease-in-out forwards
      stroke-dashoffset: 310
      stroke-dasharray: 294 //comprimento da linha
    
      
  
  &:active 
    #pathA 
      animation: outA .5s ease-in-out forwards
      stroke-dashoffset: 710
      stroke-dasharray: 250 //line lenght
    
    #pathB 
      animation: outB .1s linear forwards .1s
      stroke-dashoffset: 0
      stroke-dasharray: 40 //max 40
    
    #pathC 
      animation: outC .3s ease-in-out forwards
      stroke-dashoffset: 841
      stroke-dasharray: 294  

//in
@keyframes inA
  to
    stroke-dashoffset: 710
@keyframes inB
  to
    stroke-dashoffset: 0
@keyframes inC
  to
    stroke-dashoffset: 841
//out
@keyframes outA
  to
    stroke-dashoffset: 280
@keyframes outB
  to
    stroke-dashoffset: 40
@keyframes outC
  to
    stroke-dashoffset: 310
              
            
!

JS

              
                
              
            
!
999px

Console