我正在使用html和CSS编写网页。我的伪类：悬停停止在我的网页上工作，但是：焦点仍然有效。 Hover工作正常，然后我做了一个不相关的编辑（在我的一个块中添加了一个图像），并注意到它已停止工作。我删除了我的最后一个更改但它仍然无效。
我已经检查了所有内容并通过验证器运行了html和css，除了使用字符编码之外没有任何错误，但我知道没有它就可以正常工作。这真的没有意义！
我将显示我的页面和我的代码。请记住这是我的第一个网页，我知道我没有正确优化我的背景图像，并且可能有一些不必要的div，但考虑到一周前我觉得它很不错，我不知道html是什么。我对CSS进行了大量评论和组织，您可以在顶部附近找到我的悬停代码以及其余的无类/ ID。悬停链接是侧栏上网页上的唯一链接。
http://www.adrianhoulewebprojects.com/HomePage.html
这是我的HTML
<!--Home Page for adrianhoulewebpojects.com Version 1.0-->
<!--Written by Adrian Houle-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<link rel="stylesheet" type="text/css" href="css/HomePageStyle.css">
<title>Adrian Houle Web Projects</title>
</head>
<body>
<div id="Sidebar">
<h3>Projects</h3>
<ul>
<li>
<a href="http://www.adrianhoulewebprojects.com/UnderConstruction.html">Under Construction</a>
</li>
<li>Unfinished Project #2</li>
<li>Unfinished Project #3</li>
<li>Unfinished Project #4</li>
<li>Unfinished Project #5</li>
</ul>
</div>
<div class="box">
<div class="HalfSpacer"></div>
<div class="TransBox" id="Header">
<h1>Welcome to<br>AdrianHouleWebProjects.com</h1>
</div>
<div class="Spacer"></div>
<div class="TransBox" id=About>
<h2>About:</h2>
<p>Welcome to my website. I had a bit of time over the holidays and decided to finally get around to learning web programming. The purpose of this website is to give me a place to practice and display what I learn in the form of web projects. I may also be making some blogs that will also serve to showcase my travelling and hobbies.</p>
</div>
<div class="Spacer"></div>
<div class="TransBox" id="NewStuff">
<h2>Coming Soon</h2>
<ul>
<li>
<h3>Australia Travel Blog</h3>
<img src="http://www.adrianhoulewebprojects.com/img/AustralianFlag100by50.gif" alt="Australian Flag" >
<p>2013-2014 Australia Travel Blog coming soon.</p>
</li>
</ul>
</div>
<div class="Spacer"></div>
<div class="TransBox" id="Contact">
<h2>Contact Info:</h2>
<p class="Italic">Please report any compatibility, accessibility, or security issues to:</p>
<p>Adrian Houle</p>
<p>adrianhoule@gmail.com</p>
</div>
<div class="Spacer"></div>
<div class="TransBox" id="Footer">
<p>Website by Adrian Houle</p>
</div>
</div>
<div class="BottomBorder"></div>
</body>
</html>
这是我的CSS
/***************************************** Info *********************************************************/
/*Style Sheet for HomePage of adrianhoulewebprojects.com*/
/*Written by Adrian Houle*/
/*For any issues with my website (compatibility, accessibility, white-hat reports) feel free to contact me at
adrianhoule@gmail.com
/*Page Purpose: Create a homepage that welcomes users to my website and directs them to various projects*/
/***********************************************************************************************************/
/************************************* Table of Contents **************************************************/
/*CSS layout*/
/* -none specific elements*/
/* -classes*/
/* -ID's and children of ID's*/
/* -Other*/
/************************************************************************************************************/
/************************************** CSS code ****************************************************/
/* -none specific elements ***********************************************************************************/
p {
font-size: large;
font-weight: bolder;
}
a {
color: blue;
}
a :hover, :focus{
background-color: yellow;
text-decoration: none;
font-size: larger;
}
/* -classes **************************************************************************************************/
/*Element that contains everything except the sidebar and has the main background image.*/
.box {
display: block;
position: relative;
width: 100%; /*test and adjust to keep it from expading the browser*/
height: 100%;
border: 3px solid black;
right: 0;
top: 0px;
padding: 0;
background-image: url(http://www.adrianhoulewebprojects.com/img/CautionStripes.png);
}
/*Allows for synchronised space adjustment between elements*/
.Spacer {
position :relative;
height: 100px;
}
/*Allows for synchronised space adjustment between elements*/
.HalfSpacer {
position :relative;
height: 30px;
}
/*Every element that contains text belongs to this class*/
/*This class has nothing to do with transgender boxes, or gender boxes in general*/
.TransBox {
width: 70%;
padding: 1em;
z-index: 1;
left: 20%;
position: relative;
background-image: url(http://www.adrianhoulewebprojects.com/img/SteelPlate.jpg);
moz-box-shadow: 0 0 5px 5px #888; /*shadow effect with cross compatibility*/
webkit-box-shadow: 0 0 5px 5px#888;
box-shadow: 0 0 5px 5px #888;
}
.Italic {
font-style: Italic;
}
/* -ID's and children of ID's********************************************************************************/
/*Sidebar, to be fixed to the left hand side of the screen. Must allow conent to the right of it*/
#Sidebar {
height: 100%;
width: 10%;
left: 0px;
top: 0px;
padding: 2%;
display: inline;
position: fixed;
background-image: url(http://www.adrianhoulewebprojects.com/img/SteelPlate.jpg);
border-style: solid;
border-width: 3px;
z-index: 2;
}
#Sidebar ul {
padding-left:0;
}
#Sidebar li {
margin: 10%;
}
/*Header text*/
#Header h1 {
text-align: center;
}
#Footer p {
text-align: center;
}
/* -Other (empty)*****************************************************************************************/
感谢您的帮助。
答案 0 :(得分：5)
a与:hover合并为：
a:hover, a:focus{
background-color: yellow;
text-decoration: none;
font-size: larger;
}
除非您希望每个元素都受到影响，否则还要将其设为a:focus。
答案 1 :(得分：1)
删除a和：hover
之间的空格a:hover{
background-color: yellow;
text-decoration: none;
font-size: larger;
}