body {background: url(https://oir.mobi/uploads/posts/2021-01/1611918611_17-p-krasivii-anime-fon-17.jpg);}


li:hover { box-shadow: 0 0 10px rgba(0,0,0,0.5); /* Параметры тени */

}
li	{
	list-style-type: none;
}
.a{
	border: 2px solid black;
	width: 200px;
	height: 240px;
}