View source for Bootstrap/C2/Order-and-Offset-Classes-in-Bootstrap/English

'''Title of the script: '''Order and Offset Classes in Bootstrap

'''Author:''' Neha Solanki

'''Domain Reviewer: '''Ankita Maske

'''Novice Reviewer:''' Abhijit Bonik

'''Keywords: '''Bootstrap, CSS, HTML, Web Page, Web Design, Web Technology, Video Tutorial, Spoken Tutorial, Order and Offset Classes in Bootstrap, Order class, Offset''' '''class



{| border="1"
|-
|  | '''Visual Cue'''
|  | '''Narration'''
|-
|  | Slide: Title
|  | Welcome to the Spoken Tutorial on '''“Order and Offset classes in Bootstrap”.'''
|-
|  | Slide 2: 

Learning Objectives
|  | In this tutorial, we will learn about:

* '''Order classes''' and
* '''Offset classes'''

while designing a '''layout'''.
|-
|  | Slide 3: 

System Requirements

|  | This tutorial is recorded using:

* '''Ubuntu Linux OS v 18.04 '''
* '''Bootstrap 4.6.0'''
* '''HTML5'''
* '''CSS3'''
* '''gedit Text Editor '''and
* '''Firefox web browser'''

|-
|  | Slide 4: Prerequisite 

https://spoken-tutorial.org
|  | 
* To follow this tutorial, you should be familiar with '''HTML''' and '''CSS'''
* If not, please go through the '''HTML '''and''' CSS '''tutorials on this '''website'''.

|-
|  | Slide: Layout

Image1.png

Highlight 2nd and 3rd rows
|  | In this tutorial, we will design a '''layout''' as shown here.

We will see how to implement '''order''' and '''offset classes''' to the columns of 2nd & 3rd rows.
|-
|  | Slide: Order Classes
|  | Let’s start with '''order classes'''.

* '''Order classes''' are used to manage the visual order of the '''HTML''' elements.
* Following are the '''order classes''':
** '''.order-first: '''sets the visual order to first
** .'''order-last: '''sets the visual order to last
** '''.order-*:''' sets the visual order by grid numbers from 0 to 12.

|-
|  | Slide: Order Classes with Breakpoints

table1.png
|  | '''Order classes '''are also set with '''breakpoints'''.

Following are the''' .order classes''' for different '''breakpoints'''.
|-
|  | Only narration
|  | Let’s understand '''.order classes''' with an example.
|-
|  | Point to Mypage.html & Mystyle.css in My-bootstrap folder

|  | Locate the files '''Mypage.html''' and '''Mystyle.css''' in the '''My-bootstrap''' folder.

We will use '''Mypage.html''' and '''Mystyle.css files '''which we saved earlier for this demonstration.
|-
|  | 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.
* Make a copy and then use them while practising.

|-
|  | Point to Mypage.html in My-bootstrap folder

Open the file in text editor
|  | Open the file '''Mypage.html''' in the '''text editor.'''

|-
|  | [gedit - Mypage.html]

Update:
<pre>
<div class="row">

<div class="col-sm-3 order-sm-last">

<ul>

<a href="#"><li> Fruits & Vegetables </li></a>

<a href="#"><li> Foodgrain </li></a>

<a href="#"><li> Beverages </li></a>

<a href="#"><li> Personal care </li></a>

<a href="#"><li> Snacks & Branded Foods </li></a>

</ul>

</div>  

<div class="col-sm-9">

<h3> Welcome to Online Grocery Shopping!! </h3>

<p> Buy your essentials at the lowest price.
Choose from fresh produce to packaged goods 
and get them delivered straight to your doorstep.
Shop for Rs.1000 and more to get FREE delivery. <p>

</div>

</div>

<div class="row">

<div class="col-sm-3 order-3">

<h5> ABOUT BHARAT </h5>

<p> About us <br> FAQ </p>

</div>

<div class="col-sm-3 order-2">

<h5> PAYMENT AND SHIPPING </h5>

<p> Payment Methods <br> Shipping Policy </p>

</div>

<div class="col-sm-3 order-1">

<h5> CONTACT US </h5>

<p> contact@bharat-online.com <br> 9000000001 </p>

</div>

</div>
</pre>
|  | First we will add the '''order class''' in this code.



For the 2nd row 1st column, add '''order-sm-last class''' as shown.


'''sm '''specifies the '''Small''' screen size.



This will set the visual order of the first column to the last.



Next we’ll set the '''order class''' for the 3rd row which contains 3 columns as shown.

i.e 1st column with '''order-3''' '''class'''

2nd column with '''order-2''' '''class'''

3rd column with '''order-1''' '''class'''


Here we have changed the visual order to 3, 2 and 1.
|-
|  | Press Ctrl + S
|  | Save the file.
|-
|  | Point to Mypage.html in the My-bootstrap folder

Open Mypage.html in Firefox
|  | Open the file '''Mypage.html''' in a '''web browser'''.

|-
|  | [Firefox]

Textbox [Press Ctrl+Shift+C]</div>

Right click >> Inspect Element

Textbox [Press Ctrl+Shift+M]</div>

Click on Responsive Design Mode

Using mouse, by dragging change the size

|  | In the 3rd row, we see that the visual order of the columns has changed accordingly.

That is, the 1st column became the 3rd and 3rd column became 1st.



In the 2nd row, the visual order of the 1st column which consists of '''links''', is moved to last.



Let’s see how this page behaves in responsive mode after using '''order class'''.


Press '''Ctrl+Shift+C '''or right-click on the page and select '''“Inspect Element”.'''


The '''Inspect Element window '''opens.


Press '''Ctrl+Shift+M '''or click on the '''“Responsive Design Mode” '''at the bottom right.


Now the page is in '''responsive mode''', so we can change the size of the screen.

By dragging the right border, we’ll decrease the width of the screen to below '''576px.'''

Observe that now the column that consists of '''links,''' is at the first in this row.
|-
|  | 
|  | So we can conclude that its '''order''' is set to last for screen size '''Small''' and above.

You can also try '''.order classes''' with other '''breakpoints'''.
|-
|  | 
|  | Next we’ll learn about '''offset classes'''.
|-
|  | Slide: Offset Classes
|  |
* '''Offset classes''' are used to increase the left margin of the '''HTML''' elements.
* The '''class .offset-*''' increase the left margin by * grid columns
* Here, '''*''' represents any grid number between 1 to 11.

|-
|  | Only narration
|  | Let’s understand '''.offset classes''' with an example.
|-
|  | Switch to Mypage.html
|  | Switch to the '''Mypage.html''' file in the '''text editor'''.
|-
|  | [gedit - Mypage.html]

Update:
<pre>
<div class="row">

<div class="col-sm-3 order-3 offset-1">

<h5> ABOUT BHARAT </h5>

<p> About us <br> FAQ </p>

</div>

<div class="col-sm-3 order-2 offset-1">

<h5> PAYMENT AND SHIPPING </h5>

<p> Payment Methods <br> Shipping Policy </p>

</div>

<div class="col-sm-3 order-1 offset-1">

<h5> CONTACT US </h5>

<p> contact@bharat-online.com <br> 9000000001 </p>

</div>

</div>
</pre>
|  | Add the''' offset-1 class''' to all the columns in the 3rd row, as shown.


Here 1 represents 1 grid column and this '''class''' provides the left margin by default.

|-
|  | Press Ctrl + S
|  | Save the file.
|-
|  | Switch to firefox
|  | Switch to the '''browser''' and refresh the page.
|-
|  | [Firefox]

Using mouse, by dragging change the size
|  | We see that the margin of 1 grid column is added to the left of each of the three columns.

So we can say that each column has shifted to the right by 1 grid column.


By dragging the right border, we will increase the width of the screen.

At every screen size, '''offset''' remains the same.
|-
|  | Slide: Offset Class with Breakpoints

table2.png
|  | '''Offset classes''' can also be set with '''breakpoints'''.

Following are the '''.offset classes''' for different '''breakpoints'''.
|-
|  | Only narration
|  | Now let’s understand this with an example.
|-
|  | Switch to Mypage.html
|  | Switch to the '''Mypage.html''' file.
|-
|  | [gedit - Mypage.html]

Update:
<pre>
<div class="row">

<div class="col-sm-3 order-3 offset-sm-1">

<h5> ABOUT BHARAT </h5>

<p> About us <br> FAQ </p>

</div>

<div class="col-sm-3 order-2 offset-sm-1">

<h5> PAYMENT AND SHIPPING </h5>

<p> Payment Methods <br> Shipping Policy </p>

</div>

<div class="col-sm-3 order-1 offset-sm-1">

<h5> CONTACT US </h5>

<p> contact@bharat-online.com <br> 9000000001 </p>

</div>

</div>
</pre>
|  | We will look for '''Small breakpoint.'''

In the 3rd row, update the '''offset class''' for all the columns to '''offset-sm-1''' as shown.

|-
|  | Press Ctrl + S
|  | Save the file.
|-
|  | Switch to firefox
|  | Switch to the '''browser''' and refresh the page.
|-
|  | [Firefox]

Using mouse, by dragging change the size

|  | Observe that the margin of 1 grid column is set before all the three columns.

By dragging the right border, we’ll decrease the width of the screen to below '''576px.'''

Now the margin of 1 grid column is not '''set'''.


So we can say that the '''offset''' is set for screen size '''Small '''and above.

You can also try '''.offset class''' with other '''breakpoints'''.
|-
|  | 
|  | This is the final '''layout''' which we have designed using '''order''' and '''offset classes'''.
|-
|  | Only narration
|  | With this we have come to the end of this tutorial. 

Let us now summarize.
|-
|  | Slide 6: Summary 

|  | In this tutorial, we have learnt about:

* '''Order classes''' and
* '''Offset classes'''

while designing a '''layout'''
|-
|  | Slide 8: Assignment

|  | Do the below assignment-

* In '''MyPage.html '''file, change the '''order class''' for '''3rd row''' with:
** '''.order-sm-3 '''for '''1st column'''
** '''.order-sm-2 '''for '''2nd column'''
** '''.order-sm-1''' for '''3rd column'''
* Save both the files.
* Observe the output on the '''web browser'''

|-
|  | Slide:

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

Please download and watch it.
|-
|  | Slide: Spoken Tutorial Workshops
|  | The Spoken Tutorial Project team conducts workshops and gives certificates.

For more details, please write to us.
|-
|  | Slide: Forum
|  | Please post your timed queries on this forum.
|-
|  | Slide: Acknowledgement
|  | Spoken Tutorial project is funded by Ministry of Education (MoE), Govt. of India.
|-
|  | Slide: Thanks
|  | This is Neha Solanki from Spoken Tutorial, IIT Bombay signing off.

Thanks for watching.
|-
|}