محرر ويب أونلاين

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<!DOCTYPE html>
<html>
    <head>
        <style>
@keyframes color-change {
    from { background-color: red; }
    to { background-color: blue; }
}
​
@keyframes slide-horizontal {
    from { left: 0; }
    to { left: calc(100% - 100px); }
}
​
div {
    width: 100px;
    height: 100px;
    position: relative;
    border-radius: 10px;
    background-color: red;
    animation:
        2s ease-in-out infinite alternate color-change,
        2s linear infinite alternate slide-horizontal;
}
        </style>
    </head>
    <body>
        <h1>CSS animation property</h1>
        <p>The animation property can be used to add one or more single animations, separated by commas.</p>
        <div></div>
    </body>
</html>