Web Front-endHTML TutorialDetailed explanation of how the footer is always at the bottom of the web pageDetailed explanation of how the footer is always at the bottom of the web page
Last time I said that the header and tail of the web page should be separated into a separate file and shared by all web pages. This is more convenient for modification. However, I found that in some methods, the tail will follow the head immediately. The content is squeezed below. . Moreover, if the content of some pages is small, the tail cannot be squeezed to the bottom. Therefore, this time we will study how to keep the tail at the bottom. .
First put out the html code:
<body> <div class="header">头部</div> <div class="content"> 内容<br /> 内容<br /> 内容<br /> 内容<br /> 同上，以下省略N行。。。 </div> <div class="footer">尾部</div> </body>
Method one: In fact, this method should always be located at the bottom of the browser window, not at the bottom of the web page. Just like when browsing some web pages, there is always a line of prompt information below when you are not logged in or registered, which is probably the same as the back to top button. .
Last picture: It looks like this
CSS code:
body{position:relative;height:100%;}
.content{background-color: gray;padding-bottom: 100px;}
.footer{height: 100px;width: 100%;background-color: blueviolet;position: fixed;left: 0;bottom: 0;}Need to set a fixed height for the footer
Method 2: This is the method to place the footer at the bottom of the web page. Fixed footer height +Absolute positioning
body{position:relative;height:100%;}
.content{background-color: gray;padding-bottom: 100px;}
.footer{height: 100px;width: 100%;background-color: blueviolet;position: absolute;left: 0;bottom: 0;}Add padding- in the middle content part The bottom is to allow the content to be fully displayed without being covered by the footer. At the same time, a fixed height must be set for the footer.
Method 3: Fixed footer height+margin Negative values
html code is different:
head
content
content
content
Content
Same as above, but N lines are omitted below. . .
CSS code:
body{height: 100%;}
.wrap{min-height: 100%;}
.header{height: 100px;background-color: greenyellow;}
.content{background-color: gray;padding-bottom: 100px;}
.footer{height: 100px;width: 100%;background-color: blueviolet;margin-top: -100px;}Add padding-bottom to the content as above
Attachment:
When there is less content:
When there is a lot of content:
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