HTML/CSS - Transparent Color 2.0☺️☺️. Online Editor and JavaScript Compiler

html

<html>
    
<head>
    <title>TRANSPARENT COLORS</title>
    <style>
        body
{
    animation:colorchange 5s linear 1s infinite alternate;
    background-color:skyblue;
}
@keyframes colorchange
{
    from{background-color:skyblue;}
    to{background-color:red;}
}
h4
{
    text-align:center;
    background-color:skyblue;
    border-radius:5px;
}
p
{
    text-align:center;
    border-radius:5px;
}

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