A floating cloud background using CSS Transforms, negative animation delays, and a LESS loop for nth-child staggering.
Created
December 11, 2020 05:18
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Floating Cloud Background
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<div id="Clouds"> | |
<div class="Cloud Foreground"></div> | |
<div class="Cloud Background"></div> | |
<div class="Cloud Foreground"></div> | |
<div class="Cloud Background"></div> | |
<div class="Cloud Foreground"></div> | |
<div class="Cloud Background"></div> | |
<div class="Cloud Background"></div> | |
<div class="Cloud Foreground"></div> | |
<div class="Cloud Background"></div> | |
<div class="Cloud Background"></div> | |
<!-- <svg viewBox="0 0 40 24" class="Cloud"><use xlink:href="#Cloud"></use></svg>--> | |
</div> | |
<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" | |
width="40px" height="24px" viewBox="0 0 40 24" enable- xml:space="preserve"> | |
<defs> | |
<path id="Cloud" d="M33.85,14.388c-0.176,0-0.343,0.034-0.513,0.054c0.184-0.587,0.279-1.208,0.279-1.853c0-3.463-2.809-6.271-6.272-6.271 | |
c-0.38,0-0.752,0.039-1.113,0.104C24.874,2.677,21.293,0,17.083,0c-5.379,0-9.739,4.361-9.739,9.738 | |
c0,0.418,0.035,0.826,0.084,1.229c-0.375-0.069-0.761-0.11-1.155-0.11C2.811,10.856,0,13.665,0,17.126 | |
c0,3.467,2.811,6.275,6.272,6.275c0.214,0,27.156,0.109,27.577,0.109c2.519,0,4.56-2.043,4.56-4.562 | |
C38.409,16.43,36.368,14.388,33.85,14.388z"/> | |
</defs> | |
</svg> |
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<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script> | |
<script src="https://codepen.io/shshaw/pen/epmrgO"></script> |
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@import "lesshat"; | |
#Clouds { | |
position: absolute; | |
top: 0; right: 0; bottom: 0; left: 0; | |
margin: auto; | |
height: 30%; | |
overflow: hidden; | |
animation: FadeIn 3s ease-out; | |
user-select: none; | |
} | |
@keyframes FadeIn { | |
from { opacity: 0; } | |
to { opacity: 1; } | |
} | |
@duration: 120s; | |
.Cloud { | |
position: absolute; | |
width: 100%; | |
//outline: solid 1px #F00; | |
background-repeat: no-repeat; | |
background-size: auto 100%; | |
height: 70px; | |
animation-duration: @duration; | |
animation-iteration-count: infinite; | |
animation-fill-mode: forwards; | |
animation-timing-function: linear; | |
animation-name: Float, FadeFloat; | |
z-index: 1; | |
} | |
@height: 10%; | |
.Cloud.Foreground { | |
height: @height; | |
min-height: 20px; | |
z-index: 3; | |
} | |
.Cloud.Background { | |
height: @height / 1.1; | |
min-height: 8px; | |
animation-duration: @duration * 1.75; | |
//animation-delay: -2s; | |
} | |
@keyframes Float { | |
from { transform: translateX(100%) translateZ(0); } | |
to { transform: translateX(-15%) translateZ(0); } | |
} | |
/* | |
@keyframes Float { | |
from { transform: translateX(100%) translateY(-100%) translateZ(0); } | |
50% { transform: translateX(55%) translateY(0) translateZ(0); } | |
to { transform: translateX(-5%) translateY(-100%) translateZ(0); } | |
} | |
*/ | |
@keyframes FadeFloat { | |
0%, 100% { opacity: 0; } | |
5%, 90% { opacity: 1; } | |
} | |
.Cloud-Loop (@delay, @i) when (@i > 0) { | |
.Cloud:nth-child(@{i}) { | |
animation-delay: (@delay * @i ); | |
top: unit( @i * 6 ,%); | |
} | |
.Cloud.Foreground:nth-child(@{i}) { | |
animation-duration: (@duration - (@i * 4)); | |
height: (@height + (@i * 2.5)); | |
} | |
.Cloud.Background:nth-child(@{i}) { | |
animation-duration: (@duration * 1.25 - (@i * 4)); | |
//animation-duration: ((@duration * 1.75) - (@i * 2) ); | |
height: ((@height / 1.1) - (@i * 1.25)); | |
} | |
.Cloud-Loop(@delay, (@i - 1)); // Keep Looping | |
} | |
.Cloud-Loop (0) {} // End loop | |
.Cloud-Loop ((@duration / 6.5 ) * -1, 10); | |
.Cloud { | |
background-image: url(data:image/png;base64,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); | |
} | |
.Cloud.Background { | |
background-image: url(data:image/png;base64,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); | |
} | |
// Presentational | |
html, body { margin: 0; padding: 0; } | |
html { height: 100%; } body { min-height: 100%; } | |
body { | |
color: #FFF; | |
background-color: #FD940A; | |
background-image: radial-gradient(circle, #F9A72B 0%, #FA9026 70%, #FB6C1F 100%); | |
} |
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