Difference between revisions of "HTML/C2/Styles-and-CSS-in-HTML/English"

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|| Slide 2: Learning Objectives  
 
|| Slide 2: Learning Objectives  
 
|| In this tutorial we will learn about:
 
|| In this tutorial we will learn about:
−
*Styling the content in '''HTML''' using '''style''' as a '''Tag''' and an '''Attribute
+
*Styling the content in '''HTML''' using '''style''' as a '''Tag''' and an '''Attribute'''
  
 
We will also learn about '''CSS'''.
 
We will also learn about '''CSS'''.
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|-
 
|-
 
|| Slide 6: Styles
 
|| Slide 6: Styles
−
|| *'''Styles '''allows us to define the presentation of the '''HTML elements'''.
+
||  
 +
*'''Styles '''allows us to define the presentation of the '''HTML elements'''.
 
*'''Styles''' in '''HTML''' can be defined in 3 ways:
 
*'''Styles''' in '''HTML''' can be defined in 3 ways:
−
**Inline attribute for the '''tags'''
+
**'''Inline attribute''' for the '''tags'''
 
**Individual '''tag '''and
 
**Individual '''tag '''and
 
**External style sheet ('''CSS''')
 
**External style sheet ('''CSS''')
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|-
 
|-
 
|| Slide 7: Style attribute
 
|| Slide 7: Style attribute
−
|| *'''Style''' is an '''attribute''' that specifies the '''style''' of an '''element'''.
+
||  
 +
*'''Style''' is an '''attribute''' that specifies the '''style''' of an '''element'''.
 
*For eg: '''font-family, font-size, colour''', etc.
 
*For eg: '''font-family, font-size, colour''', etc.
 
*'''style attribute''' decides how the content will be displayed.
 
*'''style attribute''' decides how the content will be displayed.
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|-
 
|-
 
|| Slide 7: Style attribute
 
|| Slide 7: Style attribute
−
|| This is the syntax:
 
  
 
<nowiki> <tag-name style=”Property-Name:Value”> Content </tag-name> </nowiki>  
 
<nowiki> <tag-name style=”Property-Name:Value”> Content </tag-name> </nowiki>  
 +
|| This is the syntax.
  
 
|-
 
|-
 
|| Slide 7: Style attribute
 
|| Slide 7: Style attribute
−
|| We can add more '''properties''' with the help of a '''semi-colon''', as shown here.
+
 
  
 
<nowiki> <tag-name style="Property1:Value; </nowiki>
 
<nowiki> <tag-name style="Property1:Value; </nowiki>
 
   
 
   
 
<nowiki> Property2:Value"> Content </tag-name> </nowiki>  
 
<nowiki> Property2:Value"> Content </tag-name> </nowiki>  
 +
|| We can add more '''properties''' with the help of a '''semi-colon''', as shown here.
 +
  
 
Let’s try this out.
 
Let’s try this out.
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|| We will also add one more '''style property''' called '''text align'''.
 
|| We will also add one more '''style property''' called '''text align'''.
  
−
Now next to the word '''yellow, type-
+
Now next to the word '''yellow''', type-
  
 
'''semi-colon space text hyphen align colon centre'''
 
'''semi-colon space text hyphen align colon centre'''
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|-
 
|-
 
|| Press Ctrl + S keys
 
|| Press Ctrl + S keys
−
|| Save the code file.
+
|| Save the file.
  
 
|-
 
|-
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Hence, they will be applied to all the content within the '''body'''.
 
Hence, they will be applied to all the content within the '''body'''.
−
 
−
|-
 
−
|| Switch to Gedit
 
−
|| Switch back to the code.
 
  
 
|-
 
|-
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|-
 
|-
 
|| Slide 8: Style Tag
 
|| Slide 8: Style Tag
−
|| This is the syntax for the '''style tag'''
 
  
 
<nowiki> <style> </nowiki>  
 
<nowiki> <style> </nowiki>  
 
<nowiki> Tag-name {property:value;} </nowiki>  
 
<nowiki> Tag-name {property:value;} </nowiki>  
 
<nowiki> </style> </nowiki>  
 
<nowiki> </style> </nowiki>  
 +
 +
|| This is the syntax for the '''style tag'''
  
 
|-
 
|-
 
|| Slide 8: Style Tag
 
|| Slide 8: Style Tag
−
|| *We can add '''styles''' for multiple '''tags'''
+
||  
 +
*We can add '''styles''' for multiple '''tags'''
 
*And multiple '''attributes''' for '''tags, '''as well
 
*And multiple '''attributes''' for '''tags, '''as well
  
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|-
 
|-
 
||  
 
||  
−
|| Switch to the editor.  
+
|| Now let us change the '''style''' for the first '''paragraph tag'''.
  
−
Now let us change the '''style''' for the first '''paragraph tag'''.
+
Switch to the editor.  
  
 
Inside the first '''p tag''' next to '''title''' type  
 
Inside the first '''p tag''' next to '''title''' type  
  
−
'''style="text-align:center"'''
+
'''space style''' is equal to within double quotes '''text hyphen align colon center'''
  
 
|-
 
|-
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Point at the examples  
 
Point at the examples  
−
|| Some of the other '''style properties''' are
+
|| Some of the common '''style properties''' are
  
 
*'''background-color''' to set the background
 
*'''background-color''' to set the background
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|| Now we will learn about the '''external style sheets.'''
 
|| Now we will learn about the '''external style sheets.'''
  
−
*'''External styles''' are defined with the help of '''CSS'''
+
*'''External style sheets''' are defined with the help of '''CSS'''
−
*'''CSS''' stands for '''Cascading''' '''Style''' '''Sheet'''
+
*'''CSS''' stands for '''Cascading Style Sheet'''
 
*It is a file in which we can define the '''styles''' for multiple '''html''' pages
 
*It is a file in which we can define the '''styles''' for multiple '''html''' pages
 
*'''CSS''' file will not have any '''html''' code
 
*'''CSS''' file will not have any '''html''' code
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|-
 
|-
 
|| Slide 10: CSS
 
|| Slide 10: CSS
−
|| *We have to include the '''CSS''' file in the '''head''' section with the help of '''link tag'''
 
−
*This is the syntax:
 
  
 
<nowiki> <link rel="stylesheet" href="filename.css"></nowiki>  
 
<nowiki> <link rel="stylesheet" href="filename.css"></nowiki>  
 +
||
 +
*We have to include the '''CSS''' file in the '''head''' section with the help of '''link tag'''
 +
*This is the syntax.
  
 
|-
 
|-
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|-
 
|-
 
|| Type <link rel="stylesheet" href="mystyle.css">
 
|| Type <link rel="stylesheet" href="mystyle.css">
−
|| Now in our '''html''' file under '''head''' section, after the '''title tag''' line, let us include the
 
−
'''css''' file.
 
  
−
Type:
+
|| Now in our '''html''' file under '''head''' section, after the '''title tag''' line, let us include the '''css''' file.
−
<nowiki> <link rel="stylesheet" href="mystyle.css"> </nowiki>
+
 
 +
Type the following code
  
 
|-
 
|-
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|-
 
|-
 
|| Slide 11: Note
 
|| Slide 11: Note
 +
 +
Eg) '''<nowiki> <link rel="stylesheet" href="Desktop/CSS/mystyle.css"> </nowiki>'''
 
|| Make sure that your '''html''' and '''css''' files are kept in the same folder.
 
|| Make sure that your '''html''' and '''css''' files are kept in the same folder.
  
 
If the '''css''' file is in a different folder, then mention the full path for the file inside the code.
 
If the '''css''' file is in a different folder, then mention the full path for the file inside the code.
  
−
Eg) '''<nowiki> <link rel="stylesheet" href="Desktop/CSS/mystyle.css"> </nowiki>'''
+
Example.
  
 
|-
 
|-

Latest revision as of 12:04, 9 May 2018

Title of the script:Styles and CSS

Author: Praveen S

Domain Reviewer: M.Deivamani

Novice Reviewer:Madhulika G

Keywords: HTML, Styles in HTML, CSS, Font, Color, Web Designing, Web Site, Spoken Tutorial, Video Tutorial

Visual Cue Narration
Slide 1: Title Hello and welcome to this Spoken Tutorial on Styles and CSS in HTML.
Slide 2: Learning Objectives In this tutorial we will learn about:
  • Styling the content in HTML using style as a Tag and an Attribute

We will also learn about CSS.

Slide 3: Prerequisite To practise this tutorial, you should know to use

any WYSIWYG or Text Editor and a Web Browser.

If not, then go through gedit Text Editor and Firefox tutorials on this website.

Slide 4: System Requirements To record this tutorial, I’m using
  • Ubuntu Linux 16.04 OS
  • HTML5
  • gedit Text Editor and
  • Firefox web browser

However you may, use any other editor or web browser of your choice.

Slide 5: Code Files The files used in this tutorial are available in the Code Files link on this tutorial page.

Please download and extract them.

Slide 6: Styles
  • Styles allows us to define the presentation of the HTML elements.
  • Styles in HTML can be defined in 3 ways:
    • Inline attribute for the tags
    • Individual tag and
    • External style sheet (CSS)

Let us look at them one by one.

Slide 7: Style attribute
  • Style is an attribute that specifies the style of an element.
  • For eg: font-family, font-size, colour, etc.
  • style attribute decides how the content will be displayed.
  • Once the style attribute is declared for a tag, it will override the existing property.
Slide 7: Style attribute

<tag-name style=”Property-Name:Value”> Content </tag-name>

This is the syntax.
Slide 7: Style attribute


<tag-name style="Property1:Value;

Property2:Value"> Content </tag-name>

We can add more properties with the help of a semi-colon, as shown here.


Let’s try this out.

Open MyFirstPage.html in gedit We will open our MyFirstPage.html, which we created earlier.

The same is available in the Code Files link.

Point to Body tag Earlier in this series, we had defined the style attribute for the body tag.

And we had set the background color as sky-blue using the style attribute.

Open MyFirstPage.html in Firefox Switch to the folder where the file is saved.

Right-click on the filename and open in the web browser.

Observe that the background color of the page is set to sky-blue.
In Gedit Switch to the text editor.
Change sky-blue to yellow Now let us change the color from sky-blue to yellow.
Type:

; text-align:center

We will also add one more style property called text align.

Now next to the word yellow, type-

semi-colon space text hyphen align colon centre

Press Ctrl + S keys Save the file.
Switch to the browser and refresh the page Then switch to the browser and refresh the page.
Circle the background with the mouse

Point to the text.

Observe that the background color has changed from sky-blue to yellow.

And all the content on the page is center aligned.

Point to Body tag in the code The style attributes, background color and text align are defined for body tag.

Hence, they will be applied to all the content within the body.

Type: style="text-align:left" Now let us set the text align attribute for the first paragraph tag.

Locate the line Mumbai Farmer’s Market.

After the title type:

space style equal to within double quotes text hyphen align colon left

Press Ctrl + S keys Save the code.
Switch to the browser and refresh Then switch to the browser and refresh the page.

Observe the changes.

Point to the body tag

Point to p tag with style attribute

Earlier we had center aligned the whole content inside the body section.

But now, the style attribute defined within the p tag overrides the earlier properties.

This is how the inline style attribute works.

It can be applied to all HTML elements.

Slide 8: Style Tag Another method to define the styles is by using the style tag.
  • It defines the styles for the whole document.
  • We can have many style tags for a single document.
  • It has to be declared inside the head section.
  • It has both start and end tags.
Slide 8: Style Tag

<style> Tag-name {property:value;} </style>

This is the syntax for the style tag
Slide 8: Style Tag
  • We can add styles for multiple tags
  • And multiple attributes for tags, as well
Switch to gedit Let me switch back to the editor window to try this.
Point to Body tag I will delete the style attribute which I had written for the body tag.

And also delete the style attribute for the paragraph tag.

Type:

<style>

body {

background-color:pink;

text-align:center;

} </style>

Then in head section, after the title tag line, press Enter and type the following code.
Press Ctrl + S keys Save the file.
Switch to the browser and refresh Switch to the browser and refresh the page.

Observe the changes in the displayed content.

In Gedit Let us switch to our editor once again and add some more examples.
Type inside style tag:

p {

text-align:left;

}

In the style tag, type following code
Press Ctrl + S After this, save the file.
Switch to the browser and refresh Now go to the browser and refresh the page.

Notice that the content inside both the paragraph tags appear left aligned.

Compare the code in the browser This is because the alignment for paragraph tag is set globally for this document.
Now let us change the style for the first paragraph tag.

Switch to the editor.

Inside the first p tag next to title type

space style is equal to within double quotes text hyphen align colon center

Press Ctrl + S Save the code.
Switch to the browser and refresh Switch to the browser and refresh the page.

Now the content within the first paragraph tag appears center aligned.

This is because the inline style attribute overrides the global style property.

Slide 9: Common Style properties

Point at the examples

Some of the common style properties are
  • background-color to set the background
  • color to set the font color
  • font-family to set the font
  • font-size to set the font size
  • text-align for text alignment

Try these out by yourself.

Slide 10: CSS Now we will learn about the external style sheets.
  • External style sheets are defined with the help of CSS
  • CSS stands for Cascading Style Sheet
  • It is a file in which we can define the styles for multiple html pages
  • CSS file will not have any html code
Slide 10: CSS

<link rel="stylesheet" href="filename.css">

  • We have to include the CSS file in the head section with the help of link tag
  • This is the syntax.
Slide 10: CSS To learn more about CSS, please visit our website http://spoken-tutorial.org

Now let’s see a small demo on how to work with CSS files.

Show mystyle.css in gedit For this demonstration, I have already created a CSS file named mystyle.css

The same is available in the Code Files link.

You can see only the style definitions which we have seen in the previous example.

Remove the style section In our html file, remove the style defined within the style tags.

Also remove the inline style for the first paragraph tag.

Press Ctrl + S Now save the file.
Switch to the browser and refresh Switch to the browser and refresh the page.

Notice that now our page is displayed without any styles.

Type <link rel="stylesheet" href="mystyle.css"> Now in our html file under head section, after the title tag line, let us include the css file.

Type the following code

Press Ctrl + S Save the code.
Slide 11: Note

Eg) <link rel="stylesheet" href="Desktop/CSS/mystyle.css">

Make sure that your html and css files are kept in the same folder.

If the css file is in a different folder, then mention the full path for the file inside the code.

Example.

Switch to the browser and refresh Switch to the browser and refresh the page.

Now the new style attributes are applied to our page.

Switch to mystyle.css Let’s make some changes to the css.

Switch to the mystyle.css file

Change center to left >> Remove p style section Now change the alignment of the body to left and remove the paragraph alignment as well.
Press Ctrl + S keys >> Switch to the browser Save the file and switch to the browser.
Refresh Refresh the page and observe the output.
This is how the styles works in HTML and CSS.
With this, we come to the end of this tutorial.

Let us summarise.

Slide 12: Summary In this tutorial, we have learnt about
  • Style as an attribute (inline)
  • Style as a tag (internal)
  • Including a CSS file within an HTML code (External)
Slide 13: Assignment As an assignment
  • Open the file MyHomePage.html which you created earlier.
  • Remove the inline style for body tag
  • Create the following internal style in the head section
  • Set the body background color as “Khaki” and centre align the text
  • Set the alignment of paragraph tag to “left”
Slide 14:

About Spoken Tutorial project

The video at the following link summarises the Spoken Tutorial project.

Please download and watch it.

Slide 15: About Workshop The Spoken Tutorial Project team conducts workshops and gives certificates.

For more details, please write to us.

Slide 16: Forum questions Please post your timed queries in this forum.
Slide 17: Acknowledgement Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.

More information on this mission is available at this link.

Slide 18: Thanks This is Praveen from IIT Bombay signing off.

Thank you for joining

Contributors and Content Editors

Nancyvarkey, Pravin1389

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