I've set up reset.css already.
html,body,div,ul,ol,li,p,h1,h2,h3,h4{
margin:0;
padding:0;
}
but the browser still use the default stylesheet。
Because the code is too long to upload.
Has anyone encountered a similar problem?
You seem to be imagining that a rule overrides/replaces/shadows all properties for its selector(s). That, of course, is not the case. A rule such as
html,body,div,ul,ol,li,p,h1,h2,h3,h4{
margin:0;
padding:0;
}
specifies only the margin and padding properties for the specified selectors. Other properties for those selectors, including display etc., will continue to be drawn from wherever they might have been specified, including the user agent default stylesheet.
Note that -webkit-margin-* properties are the way Chrome sets up its defaults to be more general in the case of right-to-left layouts. However, they are separate from the margin properties, and hence will not be shown as being overridden (struck-out) because a higher-priority rule specifies a margin. However, when Chrome goes to calculate the margin, it will give precedence to the margin property over the -webkit-margin-* properties.
Every browser uses its default stylesheet before applying the user created one. As your screenshot suggests, you overwrite the margin and the padding. All additional styling the browser needs to display the content are taken from the browser specific stylesheet (for example the font family, font size, color,...).
As some browsers render some elements different than others, there are projects as https://necolas.github.io/normalize.css/ to "normalize" the rendering.
This is normal every browser use default properties
Chrome Default CSS
Try doing this:
html,body,div,ul,ol,li,p,h1,h2,h3,h4{
margin:0;
padding:0;
-webKit-margin-start: 0;
-webKit-padding-start: 0;
}
Related
What’s the default margin that HTML sets for its <body> tag? I noticed that there’s some automatic margin, but I’m wondering if anyone knows how much it is (and whether it’s in px or %, etc.).
In most major browsers, the default margin is 8px on all sides. It is defined in pixels by the user-agent-stylesheet your browser provides.
Some browsers allow you to create and use your own user-agent-stylesheet, but if you are developing a website, I would recommend staying away from changing this, since your users most likely will not have a modified stylesheet and would then see a different page than you do.
If you want to change it, you can just do this:
body {
margin: 0px;
padding: 0px;
...
}
But if you have a large project and want to be more complete, use normalize.css. It resets a lot of default values to be consistent across browsers.
According to W3School's CSS reference,
the default properties and values for a body tag are,
body{ display : block; margin : 8px; }
And one can quickly get the computed details of any element by accessing the Computed Pane in the Chrome Dev tools.
css default values
https://www.w3schools.com/cssref/css_default_values.asp
body{ display : block; margin : 8px; }
* {
margin: 0;
padding: 0;
}
The body can also be reset using the asterix tag.
What’s the default margin that HTML sets for its <body> tag? I noticed that there’s some automatic margin, but I’m wondering if anyone knows how much it is (and whether it’s in px or %, etc.).
In most major browsers, the default margin is 8px on all sides. It is defined in pixels by the user-agent-stylesheet your browser provides.
Some browsers allow you to create and use your own user-agent-stylesheet, but if you are developing a website, I would recommend staying away from changing this, since your users most likely will not have a modified stylesheet and would then see a different page than you do.
If you want to change it, you can just do this:
body {
margin: 0px;
padding: 0px;
...
}
But if you have a large project and want to be more complete, use normalize.css. It resets a lot of default values to be consistent across browsers.
According to W3School's CSS reference,
the default properties and values for a body tag are,
body{ display : block; margin : 8px; }
And one can quickly get the computed details of any element by accessing the Computed Pane in the Chrome Dev tools.
css default values
https://www.w3schools.com/cssref/css_default_values.asp
body{ display : block; margin : 8px; }
* {
margin: 0;
padding: 0;
}
The body can also be reset using the asterix tag.
I found this reset.css file inside a jquery image slider demo, but it was never included in the main index.html file. what is is suppose to do, and more importantly, where do you put it? Do you put it before any referenced stylesheets()?
Here is the code inside reset.css
/* CSS reset */
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td {
margin:0;
padding:0;
}
html,body {
margin:0;
padding:0;
}
table {
border-collapse:collapse;
border-spacing:0;
}
fieldset,img {
border:0;
}
input{
border:1px solid #b0b0b0;
padding:3px 5px 4px;
color:#979797;
width:190px;
}
address,caption,cite,code,dfn,th,var {
font-style:normal;
font-weight:normal;
}
ol,ul {
list-style:none;
}
caption,th {
text-align:left;
}
h1,h2,h3,h4,h5,h6 {
font-size:100%;
font-weight:normal;
}
q:before,q:after {
content:'';
}
abbr,acronym { border:0;
}
In the beginning, there was no standardisation on how styles worked, each browser implemented what it felt was right. One of the reasons you see so many questions about style errors in IE is because IE was the browser with the most dissimilarities from other browsers in terms of styling. Though IE has improved and so have other browsers they still apply their own borders, padding and margins, zoom, fonts to elements to give their own unique feel to pages. One example is, chrome gives its own yellow borders to text boxes. The "reset" actually "resets" all these styles to zero/none, so that you don't see any styles you haven't applied to your page.
If these styles are not "reset", you will see unwanted styles/effects and things breaking. Its generally recommended to "reset" the browser's styles.
Have a look at this article Should you Reset Your CSS?
reset.css is used to normalize browser's default styles.
Example:
Looking at the answers here there seems to be a bit of mixup between "reset" and "normalize". Their goals are slightly different.
A CSS reset is a set of styles you load prior to your other styles, to remove browser built-in styles. One of first and most popular ones was Eric Mayer's Reset CSS.
Another option is to harmonize browser built-in styles. The most popular tool to achieve this is currently Normalize.css.
Browser have different "built-in" styles which they apply to different html-elements. These styledefinitions may vary accross different browsers. The normalizing css files are meant to „normalize“ the rendering of the page across browsers by resetting these browser-specific styes.
You have to include it before your own style definitions. Otherwise these styles would possibly override (due to the cascading nature of css) your declarations too, which wouldn't make much sense;)
The most popular styles reset is probably Eric Meyer's which comes along with a little background information..
Browsers may render the HTML and CSS received according to its native rendering engine. Different browsers may use different rendering approaches [IE ;) if you know what i mean] so the intension of reset.css is to set all the attributes to common predefined values so the developers/ designers are can forget some rendering engine and start development from the scratch.
A CSS Reset (or “Reset CSS”) is a short, often compressed (minified)
set of CSS rules that resets the styling of all HTML elements to a
consistent baseline.
In case you didn’t know, every browser has its own default ‘user
agent’ stylesheet, that it uses to make unstyled websites appear more
legible. For example, most browsers by default make links blue and
visited links purple, give tables a certain amount of border and
padding, apply variable font-sizes to H1, H2, H3 etc. and a certain
amount of padding to almost everything. Ever wondered why Submit
buttons look different in every browser?
Obviously this creates a certain amount of headaches for CSS authors,
who can’t work out how to make their websites look the same in every
browser.
Using a CSS Reset, CSS authors can force every browser to have all its
styles reset to null, thus avoiding cross-browser differences as much
as possible
refer http://www.cssreset.com/what-is-a-css-reset/
Every browser has its own default user agent stylesheet, that it uses to make unstyled websites appear more legible. For example, most browsers by default make links blue and visited links purple, give tables a certain amount of border and padding, apply variable font-sizes to H1, H2, H3, etc. and a certain amount of padding to almost everything.
Ever wondered why Submit buttons look different in every browser?
Obviously this creates a certain amount of headaches for CSS authors, who can’t work out how to make their websites look the same in every browser.
Using a CSS Reset, CSS authors can force every browser to have all its styles reset to null, thus avoiding cross-browser differences as much as possible.
From the consistent base that you’ve set up via your reset, you can then go on to re-style your document, safe in the knowledge that the browsers’ differences in their default rendering of HTML can’t touch you!
Hopefully it helped, you may want to take a look at this article, Which CSS Reset Should I Use?.
In simple words CSS reset is required due to browsers’ inconsistency. In detail all browsers rendering are not the same. Therefore web rendering could be different from browser to browser.
Meyer Web providing a utmost CSS reset code if you're want to use/reset. You can find it here. If you need more details, here also you can find out what CSS reset in more details and why we need to use it.
I'm working on a web page in Google Chrome. It displays correctly with the following styles.
table {
display: table;
border-collapse: separate;
border-spacing: 2px;
border-color: gray;
}
It is important to note that I didn't define these styles. In Chrome developer tools, it says user agent stylesheet in place of the CSS file name.
Now if I submit a form and some validation error occurs, I get the following stylesheet:
table {
white-space: normal;
line-height: normal;
font-weight: normal;
font-size: medium;
font-variant: normal;
font-style: normal;
color: -webkit-text;
text-align: -webkit-auto;
}
table {
display: table;
border-collapse: separate;
border-spacing: 2px;
border-color: gray;
}
The font-size from these new styles is disturbing my design. Is there a way to force my stylesheets and if possible, completely overwrite Chrome's default stylesheet?
What are the target browsers? Different browsers set different default CSS rules. Try including a CSS reset, such as the meyerweb CSS reset or normalize.css, to remove those defaults. Google "CSS reset vs normalize" to see the differences.
If <!DOCTYPE> is missing in your HTML content you may experience that the browser gives preference to the "user agent stylesheet" over your custom stylesheet. Adding the doctype fixes this.
Regarding the concept “user agent style sheet”, consult section Cascade in the CSS 2.1 spec.
User agent style sheets are overridden by anything that you set in your own style sheet. They are just the rock bottom: in the absence of any style sheets provided by the page or by the user, the browser still has to render the content somehow, and the user agent style sheet just describes this.
So if you think you have a problem with a user agent style sheet, then you really have a problem with your markup, or your style sheet, or both (about which you wrote nothing).
Marking the document as HTML5 by the proper doctype on the first line, solved my issue.
<!DOCTYPE html>
<html>...
A user agent style sheet is a ”default style sheet” provided by the browser (e.g., Chrome, Firefox, Edge, etc.) in order to present the page in a way that satisfies ”general presentation expectations.” For example, a default style sheet would provide base styles for things like font size, borders, and spacing between elements.
It is also common to use a CSS Reset to normalize or remove inconsistencies between browsers due to differences between which base styles are applied by each browser.
From the specification...
A user agent's default style sheet should present the elements of the document language in ways that satisfy general presentation expectations for the document language. ~ The Cascade.
For more information about user agents in general, see user agent.
Answering the question in title, what is the user agent stylesheet, the set of default styles in the browser: Here are some of them:
Chromium (Chrome): https://chromium.googlesource.com/chromium/src/third_party/+/master/blink/renderer/core/html/resources/html.css
WebKit (Safari): https://trac.webkit.org/browser/trunk/Source/WebCore/css/html.css
Gecko (Firefox): https://searchfox.org/mozilla-central/source/layout/style/res/html.css
Serenity: https://github.com/SerenityOS/serenity/blob/master/Userland/Libraries/LibWeb/CSS/Default.css#L4
Mozilla Servo: https://github.com/servo/servo/blob/master/resources/user-agent.css#L9
Personal opinion: Don't fight with them. They have good default values, for example, in rtl/bidi cases and are consistent nowadays. Reset what you see irrelevant to you, not all of them at once.
Define the values that you don't want to be used from Chrome's user agent style in your own CSS content.
Some browsers use their own way to read .css files.
So the right way to beat this:
If you type the command line directly in the .html source code, this beats the .css file, in that way, you told the browser directly what to do and the browser is at position not to read the commands from the .css file.
Remember that the commands writen in the .html file is stronger than the command in the .css.
I had the same problem as one of my <div>'s had the margin set by the browser. It was quite annoying but then I figured out as most of the people said, it's a markup error.
I went back and checked my <head> section and my CSS link was like below:
<link rel="stylesheet" href="ex.css">
I included type in it and made it like below:
<link rel="stylesheet" type="text/css" href="ex.css">
My problem was solved.
I just wanted to expand on the response from #BenM based on what I read here from Ire Aderinokun. Because the user-agent stylesheet provides helpful default styling, think twice before overriding it.
I had a dumb error where a button element didn't look right in Chrome. I had partially styled it because I didn't want it to look like a traditional button. However, I left out style elements like border, border-color, etc. So Chrome was stepping in to supply the parts that it thought I was missing.
The problem went away once I added styles like border: none, etc.
So if anyone else is having this problem, make sure you are explicitly overriding all the applicable default user-agent styles for an element if you notice it looks wonky, especially if you don't want to reset the user agent styles completely. It worked for me.
Each browser provides a default stylesheet, called the user agent stylesheet, in case an HTML file does not specify one. Styles that you specify override the defaults.
Because you have not specified values for the table element’s box, the default styles have been applied.
I ran into this same issue, it was because I was working with non-semantic html
<!--incorrect-->
<ul class="my-custom-font">
<button>
<a>user agent styles applied instead of my-custom-font</a>
<button>
</ul>
<!--correct-->
<ul class="my-custom-font">
<li>
<a>now inherits from from my-custom-font</a>
</li>
</ul>
Once the HTML was updated, styles were applied correctly
Every browser will have a rendering engine responsible for converting HTML document to web page.
The rendering engine will have a stylesheet of its own for all the HTML elements, a kind of default stylesheet for all the HTML elements and this stylesheet is called user agent stylesheet.
The rules of user agent stylesheet can be overwritten by author stylesheet.
The rendering engine for google chrome browser is called 𝐛𝐥𝐢𝐧𝐤. And if you look through its source code you will be able to find the default stylesheet.
check this https://www.linkedin.com/posts/smruti-sagar-pattanaik-a3a000195_html-css-chrome-activity-7027888128115847168-USil?utm_source=share&utm_medium=member_desktop
I have a solution. Check this:
Error
<link href="assets/css/bootstrap.min.css" rel="text/css" type="stylesheet">
Correct
<link href="assets/css/bootstrap.min.css" rel="stylesheet" type="text/css">
Put the following code in your CSS file:
table {
font-size: inherit;
}
i am using this css.
.text_style3{
font:normal 8px Helvetica;
color:#f7922c;
}
i want to it more small but after 10px this is not working. i have used 7px, 6px, 5px etc. but this is not working.
so how can i decrease size. this css is not working in mozilla.
That is a rule specified by the browser, usually 10px is the minimum font size allowed in a default Firefox installation.
Try it by going to Preferences -> Content -> Fonts & Colors -> Advanced -> Minimum font size.
Any font size smaller than 10px will be almost non-readable. The rule is there to ensure better accessibility.
Hope that helps.
You most likely have a CSS Specificity issue, where another style is overriding the style you were expeceting to see.
You can use tools like Firebug for Firefox to see what style the browser is using and where in your code it has come from.
You may need to make your font size declaration more specific, by changing the selector, or even methods like using the !important operator or making the style inline in your HTML.
See these links for more information on ways to handle this:
http://htmldog.com/guides/cssadvanced/specificity/
http://www.w3.org/TR/CSS2/cascade.html
are you sure you arent resetting text_style3 after this to have a normal style? it may be that you are styling div p or span (or any other containing tag) after you do this one.
if you are not, break the font style down to the following:
.text_style3{
font-weight:normal;
font-size: 8px;
font-family: Helvetica;
color:#f7922c;
}
You have some really good answers here, and they are probably correct (min-font size, use !important to override other CSS). I would add to try to use em's, once you get use to them, they seem to work alot better than straight px, and they resize better (my opinion) for users who need to increase the font size for readability.
Also worth noting is that Cascading Style Sheets are just that: Cascading
Levels:
stylesheet
style tag in file
style in code
1 will be overwritten by definitions in 2.
Both 1 and 2 will be overwritten by definitions in 3.
The closer the CSS is to the actuall item/text being displaied, the more important it is.
As Mauro wrote, if the tag you are doing class="text_style3" on has some other definition of text size this may also affect the display.
It may be that you have a minimum font size set in your browser, check Tools > Options > Content and choose Advanced in the fonts and colours section and change the minimum font size to None.
It is likely your minimum font size is set to 10px (smaller sizes are unreadable)