新闻div最初有一个大纲属性。但是一旦我添加#main h2 {}行，轮廓就消失了。我需要用border属性替换它并给它一个圆角边框。我是在w3schools.com指南的帮助下完成的，但边框仍然没有显示。
编辑：我已经更新了我的代码，但它现在已经清除了我的整个新闻div。
#main {
float: right;
width: 45%;
margin: 0 2.5%;
outline: 2px dashed #0053ae;
}
#main h2 {
font-family: 'Oswald', sans-serif;
}
#news {
float: right;
width: 22.5%;
margin: 0 0 0 2.5%;
border: 5px dashed #FF6600;
border-radius: 10px;
}
以下是完整代码：
<!DOCTYPE HTML>
<html>
<head>
<link href='http://fonts.googleapis.com/css?family=Oswald' rel='stylesheet' type='text/css'>
<meta charset="utf-8">
<title>
Mount Olympus News
</title>
<style>
#wrapper {
width: 960px;
margin: 0 auto;
}
#header {
background-color: #CCC;
padding: 15px;}
#links {
float: right;
width: 22.5%;
margin: 0 2.5% 0 0 ;
outline: 2px dashed #dd0009;
}
#links h2 {
font-family: 'Oswald', sans-serif;
}
#main {
float: right;
width: 45%;
margin: 0 2.5%;
outline: 2px dashed #0053ae;
}
#main h2 {
font-family: 'Oswald', sans-serif;
}
#news {
float: right;
width: 22.5%;
margin: 0 0 0 2.5%;
border: 5px dashed #FF6600;
border-radius: 10px;
}
#news h2 {
font-family: 'Oswald', sans-serif;
}
#footer {
clear: right;
padding: 15px;
background: #CCC;}
body {
font-family: verdana, sans-serif;
/* font-size: small; */
margin: 0;
padding: 0;}
ul {
list-style: none;
margin: 0;
padding: 0;
}
li {
margin-top: 1em;
}
</style>
</head>
<body>
<div id="wrapper">
<div id="header">
<h1>Mount Olympus News</h1>
</div>
<div id="links">
<h2>Links to Stories</h2>
<ul id="stories">
<li><a href="">Jupiter & His Mighty Company</a></li>
<li><a href="">The Golden Age</a></li>
<li><a href="">The Story of Prometheus</a></li>
<li><a href="">The Flood</a></li>
<li><a href="">The Story of Io</a></li>
<li><a href="">The Wonderful Weaver</a></li>
<li><a href="">Cadmus and Europa</a></li>
<li><a href="">The Quest for Medusa's Head</a></li>
<li><a href="">The Story of Atlanta</a></li>
<li><a href="">The Horse and the Olive</a></li>
</ul>
</div>
<div id="main">
<h2>Prometheus Heats Things Up</h2>
<p>Prometheus did not care to live amid the clouds on the mountain top. He was too
busy for that. While the Mighty Folk were spending their time in idleness, drinking
nectar and eating ambrosia, he was intent upon plans for making the world wiser and
better than it had ever been before.</p>
<p>He went out amongst men to live with them and help them. Ah, how very poor and wretched they were! He found
them living in caves and in holes of the earth, shivering with the cold because there
was no fire, dying of starvation, hunted by wild beasts and by one another-the most
miserable of all living creatures.</p>
<p>"If they only had fire," said Prometheus to himself, "they could at least warm
themselves and cook their food; and after a while they could learn to make tools and
build themselves houses. Without fire, they are worse off than the beasts."</p>
<p>Then he went boldly to Jupiter and begged him to give fire to men, that so they
might have a little comfort through the long, dreary months of winter.</p>
<p>"Not a spark will I give," said Jupiter. "No, indeed! Why, if men had fire they
might become strong and wise like ourselves, and after a while they would drive us
out of our kingdom. It
is best for them to be poor and ignorant, that so we Mighty Ones may thrive and be
happy."</p>
<p>Prometheus made no answer; but he had set his heart on helping mankind, and he did
not give up. He turned away, and left Jupiter and his mighty company forever.</p>
<p>As he was walking by the shore of the sea he found a reed, or, as some say, a tall
stalk of fennel, growing; and when he had broken it off he saw that its hollow center
was filled with a dry, soft pith which would burn slowly and keep on fire a long
time. He took the long stalk in his hands, and started with it towards the dwelling
of the sun in the far east.</p>
<p>"Mankind shall have fire in spite of the tyrant who sits on the mountain top," he
said.</p>
<!-- <p>He reached the place of the sun in the early morning just as the glowing, golden
orb was rising from the earth and beginning his daily journey through the sky. He
touched the end of the long reed to the flames, and the dry pith caught on fire and
burned slowly. He called some of the shivering men from their caves and built a fire for them,
and showed them how to warm themselves by it and how to build other fires from the
coals. Soon there was a cheerful blaze in every rude home in the land, and men and
women gathered round it and were warm and happy, and thankful to Prometheus for the
wonderful gift which he had brought to them from the sun.</p>
<p>It was not long until they learned to cook their food and so to eat like men
instead of like beasts. They began at once to leave off their wild and savage habits;
and instead of lurking in the dark places of the world, they came out into the open
air and the bright sunlight, and were glad because life had been given to them.</p> -->
</div>
<div id="news">
<h2>News</h2>
<ul>
<li><strong>Pandora opens the box!</strong><br /> Disease and sorrow released to plague mankind for eternity. <a href="foo">More...</a></li>
<li><strong>Welcome to Hellenes.</strong><br /> Son of Prometheus escapes the great flood and creates a new society from tossed stones. <a href="foo">More...</a></li>
<li><strong>A Tangled Web</strong><br />
Arachne loses weave-off; is changed into a spider. <a href="">More...</a></li>
</ul>
</div>
<div id="footer">
<p>Content taken from <cite>Old Greek Stories</cite> by James Baldwin (1914). It is a copyright free text available at <a href="http://www.gutenberg.net/1/1/5/8/11582/">Project Gutenberg</a>.</p>
</div>
</div>
</body>
</html>
答案 0 :(得分：2)
在为以下内容定义样式后，您没有关闭CSS标记：
#main h2 {
font-family: 'Oswald', sans-serif;
)
上面的括号应该用这样的大括号代替：
#main h2 {
font-family: 'Oswald', sans-serif;
}
其次，border-style没有bold属性，这就是为什么你的边框没有出现的原因。您可以改为使用：
#news {
float: right;
width: 22.5%;
margin: 0 0 0 2.5% ;
border: 5px solid #FF6600;
border-radius: 25px;
}
您可以通过 here 查看可以使用的所有可用border-style。
答案 1 :(得分：0)
我将您的代码复制到代码段，编辑：
#main h2 {
font-family: 'Oswald', sans-serif;
)
到
#main h2 {
font-family: 'Oswald', sans-serif;
} <---