- Web Style Sheets CSS tips & tricks
- Centering a block or image
- Centering vertically
- Centering vertically in CSS level 3
- Centering vertically and horizontally in CSS level 3
- Centering in the viewport in CSS level 3
- Nicely centered
- Site navigation
- How to set Heading alignment in HTML?
- Syntax
- Example
- Heading alignment to left
- Syntax
- Example
- Heading alignment to left
- Syntax
- Example
- Heading alignment to justify
- Syntax
- Example
- HTML Align Center
- How to create Align Center in HTML?
- Examples of HTML Align Center
- Example #1
Web Style Sheets CSS tips & tricks
The most common and (therefore) easiest type of centering is that of lines of text in a paragraph or in a heading. CSS has the property ‘text-align’ for that:
renders each line in a P or in a H2 centered between its margins, like this:
The lines in this paragraph are all centered between the paragraph’s margins, thanks to the value ‘center’ of the CSS property ‘text-align’.
Centering a block or image
Sometimes it is not the text that needs to be centered, but the block as a whole. Or, phrased differently: we want the left and right margin to be equal. The way to do that is to set the margins to ‘auto’. This is normally used with a block of fixed width, because if the block itself is flexible, it will simply take up all the available width. Here is an example:
This rather narrow block of text is centered. Note that the lines inside the block are not centered (they are left-aligned), unlike in the earlier example.
This is also the way to center an image: make it into block of its own and apply the margin properties to it. For example:
The following image is centered:
Centering vertically
CSS level 2 doesn’t have a property for centering things vertically. There will probably be one in CSS level 3 (see below ). But even in CSS2 you can center blocks vertically, by combining a few properties. The trick is to specify that the outer block is to be formatted as a table cell, because the contents of a table cell can be centered vertically.
DIV.container < min-height: 10em; display: table-cell; vertical-align: middle >.This small paragraph.
This small paragraph is vertically centered.
Centering vertically in CSS level 3
CSS level 3 offers other possibilities. At this time (2014), a good way to center blocks vertically without using absolute positioning (which may cause overlapping text) is still under discussion. But if you know that overlapping text will not be a problem in your document, you can use the ‘transform’ property to center an absolutely positioned element. For example:
This paragraph is vertically centered.
For a document that looks like this:
the style sheet looks like this:
div.container3 < height: 10em; position: relative > /* 1 */ div.container3 p < margin: 0; position: absolute; /* 2 */ top: 50%; /* 3 */ transform: translate(0, -50%) > /* 4 */
- Make the container relatively positioned, which declares it to be a container for absolutely positioned elements.
- Make the element itself absolutely positioned.
- Place it halfway down the container with ‘top: 50%’. (Note that 50%’ here means 50% of the height of the container.)
- Use a translation to move the element up by half its own height. (The ‘50%’ in ‘translate(0, -50%)’ refers to the height of the element itself.)
Recently (since about 2015), another technique has also become available in several CSS implementations. It is based on the new ‘flex’ keyword for the ‘display’ property. This keyword is meant for use in graphical user interfaces (GUIs), but nothing stops you from using it in a document, if the document happens to have the right structure.
This paragraph is vertically centered.
the style sheet looks like this:
div.container5 < height: 10em; display: flex; align-items: center > div.container5 p
Centering vertically and horizontally in CSS level 3
We can extend both methods to center horizontally and vertically at the same time.
A side-effect of making the paragraph absolutely positioned is that it is then only as wide as it needs to be (unless we give it an explicit width, of course). In the example below, that’s precisely what we want: We center a paragraph with just one word (“Centered!”), so the width of the paragraph should be exactly the width of that word.
The yellow background is there to show that the paragraph is indeed only as wide as its contents. We assume the same mark-up as before:
The style sheet is similar to the previous example with respect to the vertical centering. But we now move the element halfway across the container as well, with ‘left: 50%’, and at the same time move it leftwards by half its own width in the ‘translate’ transformation:
div.container4 < height: 10em; position: relative >div.container4 p < margin: 0; background: yellow; position: absolute; top: 50%; left: 50%; margin-right: -50%; transform: translate(-50%, -50%) >
The next example below explains why the ‘margin-right: -50%’ is needed.
When the CSS formatter supports ‘flex’, it’s even easier:
div.container6 < height: 10em; display: flex; align-items: center; justify-content: center > div.container6 p
i.e., the only addition is the ‘justify-content: center’. Just like ‘align-items’ determines the vertical alignment of the container’s contents, ‘justify-content’ determines the horizontal alignment. (It’s actually a bit more complex, as their names suggest, but in a simple case that’s how it works.) A side-effect of ‘flex’ is that the child element, the P in this case, is automatically made as small as possible.
Centering in the viewport in CSS level 3
The default container for absolutely positioned elements is the viewport. (In case of a browser, that means the browser window). So centering an element in the viewport is very simple. Here is a complete example. (This example uses HTML5 syntax.)
Nicely centered
This text block is vertically centered.
Horizontally, too, if the window is wide enough.
You can see the result in a separate document.
The ‘margin-right: -50%’ is needed to compensate the ‘left: 50%’. The ‘left’ rule reduces the available width for the element by 50%. The renderer will thus try to make lines that are no longer than half the width of the container. By saying that the right margin of the element is further to the right by that same amount, the maximum line length is again the same as the container’s width.
Try resizing the window: You’ll see that each sentence is on one line when the window is wide enough. Only when the window is too narrow for the whole sentence will the sentence be broken over several lines. When you remove the ‘margin-right: -50%’ and resize the window again, you’ll see that the sentences will be broken already when the window is still twice as wide as the text lines.
Site navigation
Bert Bos, style activity lead
Copyright © 1994–2021 W3C ® Privacy policy
Created 5 May 2001;
Last updated Wed 06 Jan 2021 05:40:49 AM UTC
How to set Heading alignment in HTML?
Headings are the titles or subtitles of the content that you want to display on the web page. Headings help us to get an idea of the content on the web page. Headings and subheadings represent the key concepts ideas and supporting ideas in the content of the web page. HTML have a different level of heading tags.
Heading is defined with to tags. It is important to use headings to show the HTML document structure. headings should be used for main headings, followed by headings, then , and so on up to .
Heading tags in HTML have to tags. To set the heading alignment in HTML, we use the style attribute inside an HTML element. The attribute is used with the HTML to tag, with the CSS property text-align for setting alignment for an element.
Syntax
Following is the syntax for the heading alignment in HTML.
Example
Following is the example program for the heading alignment in the center.
DOCTYPE html> html> body> h1 align="center">Tutorials point h1> body> html>
Heading alignment to left
We can align the heading to left by using the below syntax.
Syntax
Following is the syntax for the heading alignment on left.
Example
Following is the example program for the heading alignment on left.
DOCTYPE html> html> body> h1 align="left">Tutorials pointh1> body> html>
Heading alignment to left
We can align the heading to right by using the below syntax.
Syntax
Following is the syntax for the heading alignment on right in HTML.
Example
Following is the example program for the heading alignment on right.
DOCTYPE html> html> body> h1 align="right">Tutorials pointh1> body> html>
Heading alignment to justify
We can align the heading to justify by using the below syntax.
Syntax
Following is the syntax for the heading alignment in justify in HTML.
Example
Following is the example program for the heading alignment in justify.
DOCTYPE html> html> body> h1 align="justify">Tutorials pointh1> body> html>
HTML Align Center
The tag is one of the HTML tags; when we use these tags in the document, it will align the paragraphs or words or any text values it can be aligned with the center position of the web pages. In Html, these tags will use all the versions except Html5 instead of the CSS style and have a property to align the elements with the center position. In HTML, we have a different set of features to highlight and attract user nature in web pages/websites because of some alignments like font size, colors, borders, menu bar alignments, scroll bars, navigation bars, etc. these are some features for the HTML to use the web pages more attractive.
Web development, programming languages, Software testing & others
We already said that every HTML tag has a different syntax set to use the web pages within the HTML dtd procedures because HTML has pre-defined tags to use the customer requirements for successfully filling the projects. Based on that tag has some syntax for using the html elements to align with the document properly.
The above code is the basic syntax when we use it to create web pages if the data is to be aligned through the web page’s center position.
In Html, we use the tag to combine with other pre-defined tags; also, based on the user requirements, it may use tag with the divided elements through aligning with the center position for the elements of the tag likewise it will use for other HTML elements.
How to create Align Center in HTML?
In HTML, we have only or more of the blocks containing some texts or values to be aligned with the center, it will use the tag in HTML code, or we can use some CSS styles with the help of some attributes to the opening tag and use with property “text-align.” We align paragraph values in the center using HTML’s
paragraph tag by setting the property value to “text-align=center” and assigning the values to the attributes. This positions the element we indicate in the center.
The tag is now some of the HTML versions considered deprecated, but it may still work with CSS because of its favor in HTML. So we use CSS style when we use the alignment like center; we can align the center position of the data with the help of CSS property in the above paragraph. The Html element is generally considered a block-level element that displays its block-level or inline contents it felt with a horizontal position. Suppose we have only one or many blocks to align the word center using the style attributes of the elements. Suppose multiple blocks of the text area are centered using the tag like
as we considered early like in the
… sections.…
tags will use for every set of tags presented in the paragraph format; if we couldn’t use other sets of tags is not to be in the central position, we can use the