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html - Ask about margin-top

{Code...} I have a question that I don’t understand. 1. The div in the html wraps an h1, and the h1 has a margin-top. Why does the margin-top of h1 burst outside the div instead of implementing margin 2 inside the div? .How to implement it in a div? Thank you. Code demonstration link description

高洛峰 2017-05-19 10:47:56

What is the calculation process of margin-top percentage?

I know this should be simple, but can anyone tell me why the child elements in the following code are outside the bounds of the parent container when margin-top:50% is applied? How is the percentage of margin-top calculated? .container{background:lightblue;padding:10px;height:200px;}p{display:block;...

P粉921130067 2023-09-17 09:16:25

Why doesn't this CSS margin-top style work?

I try to add margin value on a div inside another div. Everything works fine except the highest value, which seems to be ignored. But why? What I expected: What I got: Code: #outer{width:500px;height:200px;background:#FFCCCC;margin:50pxauto0auto;display:block;}#inner{background:#FFCC33;margin:50px50...

P粉512729862 2023-08-23 23:07:58

How to disable margin folding

Is there a way to completely disable margin folding? The only solution I found (named "uncollapsing") is to use a 1 pixel border or a 1 pixel padding. I find this unacceptable: extra pixels complicate calculations unnecessarily. Is there a more reasonable way to disable this margin collaps...

P粉530519234 2023-08-21 23:21:12

What is the difference between left and margin-left in this?

What is the difference between left: 20px; and margin-left: 20px;

人事易分° 2018-07-04 14:09:38

"Unrendered margin-top is on fieldset's legend"

I have some HTML code equivalent to: <divstyle="border:1pxsolidblack"><fieldsetstyle="margin:0"><legendstyle="margin-top:20px;">testing....</legend ></fieldset&gt

P粉659516906 2024-04-04 19:40:04

How to achieve smooth transition margin percentage when resizing window

I want to set a percentage margin around the element that is 5% of the viewport width when the viewport is smaller and 15% of the viewport width when the viewport is larger. I can use a media query to toggle the numeric value of the margin like this: .element{margin:5%;}@media(min-width:800px){.elem...

P粉155832941 2023-09-12 18:47:54

css3 - Why does margin-left fail at certain resolutions?

Why does the margin-left fail in the two different resolutions in the above picture?

仅有的幸福 2017-06-13 09:23:36

How to set margins/padding (HTML/CSS) for each page printed?

I have a lot of content on my page, but I have no control over where it breaks. I put some content on each page using position:fixed as header/footer but it overlaps the text. I tried to solve the overlapping issue using margins and padding in the following two ways. When I add margins using @page{m...

P粉937769356 2023-10-20 17:34:03