上次設計網站是在 256 年前，當時 HTML 4 標準化，但我仍然記得一些 HTML 標簽，并想快速建立一個網站。但是我遇到了一些我無法解釋的問題。我想用一些文章創建一個簡單的網站，所以我使用了部分標簽和文章標簽，并為文章定義了不同的背景。然而，背景不適用于文章中的標題，而且角落也不圓。導航 div 中的元素也沒有更粗，為什么？
<html>
<head>
<meta charset="utf-8">
<title>CSS Background Problem</title>
<style type="text/css">
h1 {
font-weight: bolder;
}
* {
font-family: helvetica, sans-serif;
font-weight: lighter;
background-color: E2ECE8;
}
body {
margin-left: 2cm;
margin-right: 2cm;
margin-top: 0.5cm;
margin-bottom: 0.5cm;
}
#nav {
font-weight: bolder;
}
article {
background-color: white;
border-radius: 5px;
max-width: 21cm;
}
a {
text-decoration: none;
color: #007973;
}
</style>
</head>
<body>
<h1>Title</h1>
<div id="nav">
<a href="index.html">Articles</a> <a href="about.html">About</a>
</div>
<section id="articles">
<article>
<h2>December 29 2021, Dummy Post</h2>
<h3>What is Lorem Ipsum?</h3>
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
<h3>Why do we use it?</h3>
It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).
<h3>Where does it come from?</h3>
Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.
The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham.
<h3>Where can I get some?</h3>
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. It uses a dictionary of over 200 Latin words, combined with a handful of model sentence structures, to generate Lorem Ipsum which looks reasonable. The generated Lorem Ipsum is therefore always free from repetition, injected humour, or non-characteristic words etc.
</article>
</section>
</body>
</html>
uj5u.com熱心網友回復：
避免設定*不必要的規則；在這種情況下，您可能希望背景顏色為 on body。您所看到的背景不適用于標題是* {background-color: #E2ECE8}規則優先于article.
邊界半徑在那里，它只是非常小。同樣適用bolder- 它就在那里，只是不像bold.
h1 {
font-weight: bold;
}
body {
background-color: #E2ECE8;
font-family: helvetica, sans-serif;
font-weight: lighter;
margin-left: 2cm;
margin-right: 2cm;
margin-top: 0.5cm;
margin-bottom: 0.5cm;
}
#nav {
font-weight: bold;
}
article {
background-color: white;
border-radius: 5px;
max-width: 21cm;
}
a {
text-decoration: none;
color: #007973;
}<h1>Title</h1>
<div id="nav">
<a href="index.html">Articles</a> <a href="about.html">About</a>
</div>
<section id="articles">
<article>
<h2>December 29 2021, Dummy Post</h2>
<h3>What is Lorem Ipsum?</h3>
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing
software like Aldus PageMaker including versions of Lorem Ipsum.
<h3>Why do we use it?</h3>
It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here,
content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various
versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).
<h3>Where does it come from?</h3>
Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up
one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum
et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section
1.10.32. The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by
English versions from the 1914 translation by H. Rackham.
<h3>Where can I get some?</h3>
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum,
you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. It uses a dictionary
of over 200 Latin words, combined with a handful of model sentence structures, to generate Lorem Ipsum which looks reasonable. The generated Lorem Ipsum is therefore always free from repetition, injected humour, or non-characteristic words etc.
</article>
</section>uj5u.com熱心網友回復：
嗨尼爾斯，
將透明值添加到某些標簽元素的背景顏色屬性可能有助于避免默認顏色與其容器標簽上的顏色重疊，在本例中為文章。我在下面匯總了一個如何執行此操作的示例。我希望這能讓您了解最近使用 CSS 和 HTML 標簽的情況。很高興看到您重新開始編碼，這總是很有趣！！干杯!
* {
background-color: transparent;
}
body {
margin-left: 2cm;
margin-right: 2cm;
margin-top: 0.5cm;
margin-bottom: 0.5cm;
font-family: Arial, Helvetica, sans-serif;
font-weight: lighter;
background-color: #E2ECE8;
}
#nav {
font-weight: bolder;
}
h1 {
font-weight: bolder;
}
h2 {
color: #093D3D;
font-size: 17px;
}
h3 {
color: #007882;
font-size: 16px;
}
h2,
h3 {
font-weight: normal;
}
p {
font-family: "Times New Roman", Times, serif;
font-size: 15px;
text-align: justify;
text-align-last: left;
color: #586A6B;
}
article {
background-color: #ffffff;
border-radius: 5px;
max-width: 600px;
width:500px;
padding: 20px;
margin-top: 10px;
}
a {
text-decoration: none;
color: #007973;
}
a:hover {
text-decoration: none;
color: #1ECECC;
}<html>
<head>
<meta charset="utf-8">
<title>CSS Background Problem</title>
</head>
<body>
<h1>Title</h1>
<div id="nav">
<a href="index.html">Articles</a> |
<a href="about.html">About</a>
</div>
<section id="articles">
<article>
<h2>December 29 2021, Dummy Post</h2>
<h3>What is Lorem Ipsum?</h3>
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.</p>
<p>It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
<h3>Why do we use it?</h3>
<p>It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English.</p>
<p>Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).</p>
<h3>Where does it come from?</h3>
<p>Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source.</p>
<p>Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of "de Finibus Bonorum et Malorum" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, "Lorem ipsum dolor sit amet..", comes from a line in section 1.10.32.</p>
<p>The standard chunk of Lorem Ipsum used since the 1500s is reproduced below for those interested. Sections 1.10.32 and 1.10.33 from "de Finibus Bonorum et Malorum" by Cicero are also reproduced in their exact original form, accompanied by English versions from the 1914 translation by H. Rackham.</p>
<h3>Where can I get some?</h3>
<p>There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text.</p>
<p>All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. It uses a dictionary of over 200 Latin words, combined with a handful of model sentence structures, to generate Lorem Ipsum which looks reasonable. The generated Lorem Ipsum is therefore always free from repetition, injected humour, or non-characteristic words etc.</p>
</article>
</section>
</body>
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