startv

Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

Quick-add: + add another resource
via CSS Lint

Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

Quick-add: + add another resource
via JS Hint

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Want a Run Button?

If active, the preview will update automatically when you change code.

HTML

            
              .tri
  -3.times do
    .side
      -30.times do 
        .ring
            
          
!

CSS

            
              $rings: 30

body
  background-color: #0F0F0F

.tri
  position: absolute
  top: 50%
  left: 50%
  transform: translate(-50%, 100%)
  width: 50px
  height: 50px

  .side
    width: 50px
    height: 50px
    position: absolute
    transform-origin: center center
    @for $i from 1 through 3
      &:nth-child(#{$i})
        transform: translateX(-200px + 100*$i)
    &:nth-child(2)
      transform: translateY(-150px)

  .ring
    width: 50px
    height: 50px
    position: absolute
    background: white
    animation-name: rotate, cromatic
    animation-duration: 3s, 3s
    animation-timing-function: linear, linear
    animation-iteration-count: infinite, infinite
    opacity: 0.5
    box-shadow: 0 0 30px black
    border-radius: 20%
      
@for $i from 0 through $rings
  .side:nth-child(1) .ring:nth-child(#{$i})
    margin: 0 0 0 200/$rings*$i+px
    z-index: $i
    animation-delay: $i/ $rings +s

@for $i from 0 through $rings
  .side:nth-child(2) .ring:nth-child(#{$i})
    margin: 150/$rings*$i+px 0 0 -100/$rings*$i+px
    z-index: $rings - $i
    animation-delay: 2+$i/ $rings +s

@for $i from 0 through $rings
  .side:nth-child(3) .ring:nth-child(#{$i})
    margin: -150/$rings*$i+px 0 0 -100/$rings*$i+px
    z-index: $i
    animation-delay: 1+$i/ $rings +s
      
@keyframes rotate
  to
    transform: rotate(360deg)

@keyframes cromatic
  0%
    background-color: #FFFF00
  15%
    background-color: #008F59
  30%
    background-color: #2771B2
  45%
    background-color: #6E3795
  60%
    background-color: #FF0000
  75%
    background-color: #FF9201
  100%
    background-color: #FFFF00
  
            
          
!

JS

            
              // Try to change the $rings value and "-30.times do" "weird things happens"
            
          
!
999px
Loading ..................

Console