如題：?我把:hover?寫(xiě)在.css?里，不會(huì)寫(xiě)了，ul?li:hover?ul{display:block;}
這一句，我就沒(méi)改明白。?還是我這種寫(xiě)法不行？？

			<a?href="#"?class?=?"navUserInfo">Hello，yueguang_jin??<ul?class?=?"navUlStyle">
					<li?class?=?"navLiStyle"><a?href="#"?class?=?"navLiStyleAstyle">diyihang</a></li>
					<li?class?=?"navLiStyle"><a?href="#"?class?=?"navLiStyleAstyle">diyihang</a></li>
					<li?class?=?"navLiStyle"><a?href="#"?class?=?"navLiStyleAstyle">diyihang</a></li>

				</ul>?</a>

.navOrder{
		text-decoration:none;
		font-family:?"PingFang?SC";
		margin-right:?40px;
		margin-top:?15px;
		float:?right;
		font-size:?13.993px;
		color:?rgb(?135,?165,?179?);
		display:block;
	}	.navOrder:hover{color:?red}


		.navUserInfo:hover?.navUlStyle{display:block;
		color:?red}

			.navUlStyle{
			????????list-style-type:?none;
			???????position:?absolute;
			????????left:?100px;
			????????top:?200px;
					/*display:none;*/
			????????width:?100px;
			????????height:?100px;
			????????background:?yellow;
				}
				.navLiStyle{
				????????float:none;margin-top:2px;?background-color:#eee;?
				}
					.navLiStyleAstyle{
						text-decoration:none;
				????????padding:?0;
				????????margin:?0;
				????????cursor:?pointer;?/*鼠標(biāo)懸停出小手*/
					}
						.navLiStyleAstyle:hover{
							color:?yellow
						}/*鼠標(biāo)懸停變色*/

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