transform-anon-block-1.html

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<!DOCTYPE html>

<html>

<head>

    <meta http-equiv="content-type" content="text/html; charset=UTF-8">

    <meta charset="UTF-8">

    <style>

    .parent {

        border: none;

        transform-style: preserve-3d;

        background: red;

        padding: 0px;

    .child {

        width: 100px;

        height: 100px;

        background: blue;

        transform: rotate(45deg);

    </style>

</head>

<body>

    <button class="parent">

        <div class="child"></div>

    </button>

</body>

</html>