<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
#my-button:focus-within {
color: red;
}
</style>
</head>
<body>
<button id="my-button" tabindex="0">item2</button>
</body>
</html>
When pressed, the color should switch to red. Works in Chrome and Firefox, always has issues with Safari (tested on version 15.6.1).
But what is the problem?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
It seems :focus-within cannot be applied to buttons in Safari. But this works:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> #my-li:focus-within > #my-button { color: red; } </style> </head> <body> <ul> <li id="my-li" tabindex="0"> <button id="my-button">item2</button> </li> </ul> </body> </html>