Web Front-endHTML TutorialWhy is there no difference between absolute positioning and relative positioning_html/css_WEB-ITnose
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title><style type="text/css">#box_relative { position: absolute; left: 30px top: 192px; width: 800px; height: 100px; background-color: #00F; left: 95px; top: 253px;}#box01 { position: absolute; left: 72px; top: 50px; width: 300px; height: 20px; background-color: #000; z-index: 1;}#box02 { position:relative; top: 103px; width: 300px; height: 20px; background-color:#0F0; margin-left:100px;}#box03 { position:relative; top: 103px; width: 300px; height: 20px; background-color:#600; margin-left:auto; margin-right:auto;}#box06 { position:relative; width: 800px; height: 100px; background-color: #F39; top: 619px; margin-left:auto; margin-right:auto; z-index: -1;}#box07 { position:relative; width: 300px; height: 30px; background-color:#0F0; left:30px;}#box08 { position: absolute; top: 46px; width: 300px; height: 30px; background-color: #0F0; margin-left: auto; margin-right: auto; left: 30px;}</style></head><body><div id="box03"> 1111 </div><div id="box_relative"> <div id="box01"> 1111 </div> <div id="box02"> 1111 </div> </div><div id="box06"> <div id="box07"> 1111 </div> <div id="box08"> 1111 </div> </div></body></html> <div id="box06"> <div id="box07"> 1111 </div> <div id="box08"> 1111 </div> </div>
#box07 { position:relative; width: 300px; height: 30px; background-color:#0F0; left:30px;}#box08 { position: absolute; top: 46px; width: 300px; height: 30px; background-color: #0F0; margin-left: auto; margin-right: auto; left: 30px;} 1. Box07 uses relative positioning and box08 uses absolute positioning. Why is the effect the same? ?
2. If you want box06 to be centered when the page is expanded or reduced, box07 should also be centered
box08 has always been 30px away from the left
And box07 and box08 are both in box06. How to do it?
Reply to discussion (solution)
1. box07 uses relative positioning and box08 uses absolute positioning. Why are the effects the same?
They are all 30px away from the left side of box06
The IDs of both divs are within box06. How can I expand or shrink the page differently?
2. If you want box06 to be centered when the page is expanded or reduced, box07 should also be centered
How to make box08 always 30px away from the left side of the page
And box07 and box08 are both in How to do it in box06?
<style type="text/css">#box06 { position:relative; width: 500px; height: 100px; top:50%; left:50%; margin-left:-250px; margin-top:-50px; background-color:#F39;} #box07 { position:absolute; width: 300px; height: 30px; background-color:#0F0; left:50%; top:50%; margin-left:-150px; margin-top:-15px;} #box08 { position:absolute; width: 300px; height: 30px; background-color:#0Ff; left:30px; top:50%;}</style><div id="box06"> <div id="box07">box07</div> <div id="box08">box08</div></div>
box07 and box08 still move together. I hope that when the page is reduced, their distance from the left is The same, but when the page is enlarged, the position from the left is different
box07 and box08 still move together, I hope when zooming out When the page is on the left, their position from the left is the same, but when the page is enlarged, the position from the left is different
What is the difference between enlarging and reducing the page under a relative left positioning? What's the difference?
If you don’t consider how to position it
What state do you want the page to be in depending on how big it is?
There are several sizes and states
This description is clear. Let’s take a look at how to position it
I feel a little dizzy,,,,
The parent uses position:relative;
The child uses position:absolute;
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