[英]Navigation bar in front of the header and always on top of the screen when scrolling
I'm trying to create a website, where after load the navigation bar is under the header and when it is scrolled down - navigation bar should go to the top of the screen and be attached to it, and everything that is under the navigation bar should be behind it. 我正在尝试创建一个网站,加载后,导航栏位于标题下方,向下滚动时-导航栏应转到屏幕顶部并连接到它,以及导航栏下方的所有内容应该在它后面。 I want it to look like http://www.w3schools.com/css/default.asp website for computer screens. 我希望它看起来像http://www.w3schools.com/css/default.asp网站,用于计算机屏幕。
My example (not working correctly): [censored] 我的示例(无法正常工作):[已审查]
CSS code: CSS代码:
* {
box-sizing: border-box;
}
body {
margin: 0;
padding: 0;
}
.header {
width: 100%;
height: 100px;
padding: 15px;
color: #2A5282;
background-color: #E8FF79;
position: fixed;
top: 0;
z-index: -1;
}
.nav {
width: 100%;
height: 40px;
color: white;
background: #2A5282;
position: absolute;
top: 100px;
z-index: 1;
}
.nav ul {
margin: 0;
padding: 0;
overflow: hidden;
}
.nav ul li {
list-style-type: none;
float: left;
}
.nav ul li a {
color: #E8FF79;
text-align: center;
text-decoration: none;
font: bold 16px verdana;
width: 150px;
margin: 0;
padding: 10px 0;
display: block;
}
.nav ul li a:hover {
background-color: #2B5D9C;
}
.content {
width: 100%;
padding: 0 20px;
color: black;
background-color: white;
font: bold 14px verdana;
position: absolute;
top: 140px;
z-index: 1;
}
HTML code: HTML代码:
<div class="header">
<h1>This is a header</h1>
</div>
<div class="nav">
<ul>
<li><a href="#">Option 1</a></li>
<li><a href="#">Option 2</a></li>
<li><a href="#">Option 3</a></li>
<li><a href="#">Option 4</a></li>
</ul>
</div>
<div class="content">
<p>This is a paragraph.</p>
<p>This is a paragraph.</p>
<p>This is a paragraph.</p>
<p>This is a paragraph.</p>
<p>This is a paragraph.</p>
<!-->...<-->
</div>
I was trying to understand w3schools website source, but there's something I'm missing and I don't know what it is. 我试图了解w3schools网站的资源,但是我缺少一些东西,我不知道它是什么。 I don't want to use Bootstrap. 我不想使用Bootstrap。 The best solution would be to use only HTML and CSS. 最好的解决方案是仅使用HTML和CSS。
You can do like this see the example below: 您可以这样做,请参见以下示例:
<div id="scroller">Some controls</div>
CSS: CSS:
body {
height: 3000px;
top: 0;
position: relative;
}
#scroller {
position: relative;
top: 100px;
width: 100%;
background: #CCC;
height: 100px;
}
We can use javascript like this for scroll case: 对于滚动情况,我们可以使用如下所示的javascript:
$(window).scroll(function () {
if ($(window).scrollTop() > 100) {
$('#scroller').css('top', $(window).scrollTop());
}
}
);
For more details refer this: http://jsfiddle.net/cc48t/ 有关更多详细信息,请参见: http : //jsfiddle.net/cc48t/
Add js on project of you 在您的项目上添加js
$(function () {
$(window).scroll(function () {
if ($(this).scrollTop() > 20) {
$('.nav').addClass('nav-pin').fadeIn();
} else {
$('.nav').removeClass('nav-pin');
}
});
});
and css below 和下面的CSS
.nav-pin{position:fixed; top:0; left:0; z-index:9999;}
Merging your code with the JSFiddle Rahul S provided in the comment, this is the final code 将代码与注释中提供的JSFiddle Rahul S合并, 这是最终代码
Please also note that I removed the z-index
property from the .content
class of your css. 另请注意,我从css的.content
类中删除了z-index
属性。
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