我正在构建一个小小的HTML页面,因为我自学了如何编码。我已经观看了几个演练视频,并希望在不观看视频的情况下整合我所学到的内容,以便更好地完成。这是我正在处理的图像。
我想要这三个部分,'学习HTML','学习CSS3','学习Javascript'以此为中心页。我创建了一个<section ID="">
代码,用于展示展示位置下页面上的所有内容,以及每个框中3个单独的<div class="">
。
我的问题是双重的,不仅边框不在页面的中心,而且框子甚至都没有出现。
这是代码......
body {
background-color: #FFFAF0;
color: black;
font-family: garamond;
font-weight: normal;
margin: 0;
line-height: 1.6em;
padding: 0;
}
.container {
width: 80%;
margin: auto;
overflow: hidden;
}
#topheader {
background-color: #228B22;
color: white;
margin: auto;
padding: 15px;
text-align: center;
}
#navbar {
background-color: black;
color: white;
}
#navbar ul {
padding: 0;
list-style: none;
}
#navbar li {
display: inline;
margin: auto;
padding-right: 50px;
text-align: center;
}
#navbar a {
color: white;
text-decoration: none;
}
#showcase {
background-image: url('../coding/codage.png');
background-position: center right;
min-height: 300px;
margin-bottom: 30px;
text-align: center;
color: white;
}
#main {
width: 33.3% padding:10px;
margin: auto;
}
.top {
float: left;
border: 3px black;
box-sizing: border-box;
text-align: center;
}
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="ByMyself.css">
<meta charset="utf-8">
<title>How To Build A Website By Yourself</title>
</head>
<body>
<header id="topheader">
<div class="container">
<h1>Learning HTML5 and CSS3</h1>
</div>
</header>
<nav id="navbar">
<div class="container">
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">Learning HTML5</a></li>
<li><a href="#">Learning CSS3</a></li>
<li><a href="#">About Us</a></li>
</ul>
</div>
</nav>
<section id="showcase">
<div class="container">
<h1>How to learn how to build a website from scratch! Code The Future!
</h1>
</div>
</section>
<div class="clr"></div>
<section id="main">
<div class="top">
<h2>Learn HTML5</h2>
<ul>
<ol>Step 1 - Watch Tutorials</ol>
<ol>Step 2 - Take Notes</ol>
<ol>Step 3 - Repeat Until It Sinks In</ol>
</ul>
</div>
<div class="top">
<h2>Learn CSS3</h2>
<ul>
<ol>Step 1 - Watch Tutorials</ol>
<ol>Step 2 - Take Notes</ol>
<ol>Step 3 - Repeat Until It Sinks In</ol>
</ul>
</div>
<div class="top">
<h2>Learn Javascript</h2>
<ul>
<ol>Step 1 - Watch Tutorials</ol>
<ol>Step 2 - Take Notes</ol>
<ol>Step 3 - Repeat Until It Sinks In</ol>
</ul>
</div>
</section>
</body>
</html>
答案 0 :(得分:0)
有一些问题:
width
(约三分之一)和 margin
< / strong>指向您的三个.top
元素。请注意,width
应考虑边距,这可以通过使用 calc()
函数减去它们来实现。我已经margin: 0 20px;
与20px
的horziontal marign一起离开,没有垂直边距,以及width: calc(33% - 40px);
,在找到33%
之前考虑了左边距和右边距可用的width
。border: 3px black
的规则,几乎正确;您正在寻找 border: 3px solid black
; solid
至关重要!除此之外,您的“列表项”为 <ol>
,代表有序列表。你基本上在无序列表中有多个有序列表。这些应该是列表项( <li>
),而不是<ol>
项内容,如下所示:
<ol>
<li>Step 1 - Watch Tutorials</li>
<li>Step 2 - Take Notes</li>
<li>Step 3 - Repeat Until It Sinks In</li>
</ol>
然而,话说回来,你会从简单的 <div>
标签中受益,因为每个点都想要在自己的行上,并且你正在添加自己的“Step” 1“前缀。
这可以在以下内容中找到(点击Run Code Snippet
然后Full Page
):
body {
background-color: #FFFAF0;
color: black;
font-family: garamond;
font-weight: normal;
margin: 0;
line-height: 1.6em;
padding: 0;
}
.container {
width: 80%;
margin: auto;
overflow: hidden;
}
#topheader {
background-color: #228B22;
color: white;
margin: auto;
padding: 15px;
text-align: center;
}
#navbar {
background-color: black;
color: white;
}
#navbar ul {
padding: 0;
list-style: none;
}
#navbar li {
display: inline;
margin: auto;
padding-right: 50px;
text-align: center;
}
#navbar a {
color: white;
text-decoration: none;
}
#showcase {
background-image: url('../coding/codage.png');
background-position: center right;
min-height: 300px;
margin-bottom: 30px;
text-align: center;
color: white;
}
#main {
width: 33.3% padding:10px;
margin: auto;
}
.top {
float: left;
border: 3px solid black;
box-sizing: border-box;
text-align: center;
margin: 0 20px;
width: calc(33% - 40px);
}
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="ByMyself.css">
<meta charset="utf-8">
<title>How To Build A Website By Yourself</title>
</head>
<body>
<header id="topheader">
<div class="container">
<h1>Learning HTML5 and CSS3</h1>
</div>
</header>
<nav id="navbar">
<div class="container">
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">Learning HTML5</a></li>
<li><a href="#">Learning CSS3</a></li>
<li><a href="#">About Us</a></li>
</ul>
</div>
</nav>
<section id="showcase">
<div class="container">
<h1>How to learn how to build a website from scratch! Code The Future!
</h1>
</div>
</section>
<div class="clr"></div>
<section id="main">
<div class="top">
<h2>Learn HTML5</h2>
<div>Step 1 - Watch Tutorials</div>
<div>Step 2 - Take Notes</div>
<div>Step 3 - Repeat Until It Sinks In</div>
</div>
<div class="top">
<h2>Learn CSS3</h2>
<div>Step 1 - Watch Tutorials</div>
<div>Step 2 - Take Notes</div>
<div>Step 3 - Repeat Until It Sinks In</div>
</div>
<div class="top">
<h2>Learn Javascript</h2>
<div>Step 1 - Watch Tutorials</div>
<div>Step 2 - Take Notes</div>
<div>Step 3 - Repeat Until It Sinks In</div>
</div>
</section>
</body>
</html>
希望这有帮助!