Bootstrap
Build responsive, mobile-first projects on the web with the world's most popular front-end component library. Bootstrap is an open source toolkit for developing with HTML, CSS, and JS. Quickly prototype your ideas or build your entire app with our Sass variables and mixins, responsive grid system, extensive prebuilt components, and powerful plugins built on jQuery.
Source

Image Source

Repository https://github.com/twbs/bootstrap

What Will I Learn?
- We will learn how to create a responsive "timeline" with Bootstrap
- We will code our About Us section appropriately to our design.

Requirements
- Brackets (Website)
- Intermediate code knowledge
- Basic HTML and CSS knowledge

Difficulty
- Intermediate

Curriculum

Tutorial Contents

In our previous lesson, we coded our Portfolio section with the modal feature of Bootstrap. In this lesson we will add a About Us section with a responsive "timeline" feature. https://cdn.steemitimages.com/DQmZDZTDFkvq3Q33j9e3ftQxCLYxgB71MFxgzMMvhHJkKdu/Screenshot.png First of all, we will create the grid structure of our About Us section. Let's start by coding our index.html page. Create a ```section``` tag containing our About Us section. ```

``` Here we have defined the aboutUs id. As we talked in our previous lessons, with this id, we will link the About Us section to the navigation menu. Keep coding. Now we have to create a container inside the ```section``` tag. ```

``` The About Us section will consist of two parts, just like the Portfolio section. The first part will contain a title and a subtitle. Let's code them first. ```

ABOUT US

Proin iaculis purus consequat sem cure.

``` Here we have created the first part. We have added a header and a paragraph into the ```aboutUs-top``` class. Let's save our codes and check our page. https://cdn.steemitimages.com/DQmPT12Bs1iEXgLKrT15rzSZ4U1fLLxqMCajUCSVa5UJnuS/Screenshot_1.png Let's code the second part of our About Us section. We will start by creating a ```div``` class called ```aboutUs-content``` and define five ```row``` classes inside it. We will split each row into three equal columns and fill each column with our about us contents. https://cdn.steemitimages.com/DQmdB6Hi7pjeAWPnePctMZePM6REv2Tp8TjsjAKG96W2o4J/1.png ```

ABOUT US

Proin iaculis purus consequat sem cure.

``` We have created our five row classes. Using the information we learned in our previous lessons, we will divide each row into three columns. You know that, a row in Bootstrap consists of twelve columns. We will use the ```col-sm-4``` class for the three columns we want. (12/3 = 4) Let's code first row class. We will fill first and second column. Our third column will be empty. ```

ABOUT US

Proin iaculis purus consequat sem cure.

JULY 2010

Our Humble Beginnings

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

```
Let's save our codes and check our page. https://cdn.steemitimages.com/DQmX5Bp51pTmY4sVujnFAo4NqdfJ3j42TdEQoPYaDWVwitN/Screenshot_2.png Now let's code the other rows and columns according to our design. The final version of our codes should look like this:
```

ABOUT US

Proin iaculis purus consequat sem cure.

JULY 2010

Our Humble Beginnings

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

JANUARY 2011

Facing Startup Battles

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

DECEMBER 2012

Enter The Dark Days

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

FEBRUARY 2014

Our Triumph

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

OUR
STORY
CONTINUES
...

```
Let's save our codes and check our page. ![Screenshot_3.png](https://cdn.steemitimages.com/DQmVCBfr7nVGdSGs7LsecgFpU97FGqExo6UM7YbFF4mytHc/Screenshot_3.png)
About Us section is not like as what we wanted, is it? Now let's look at Bootstrap's offset class feature. Go to Bootstrap's Documentation page and follow the Layout>>Grid>>Offsetting Columns ![Screenshot_4.png](https://cdn.steemitimages.com/DQmNfbR6raVFUriejG8aZhi44ukU8DHgnsw58vQuHT7y5cS/Screenshot_4.png) ![2.png](https://cdn.steemitimages.com/DQmURwCo4ZbuoK7QXY4G65gxjzrsoSAmjNdTpVp6abPBNXi/2.png) We will move columns to the right using ```offset-sm-4``` classes. Firstly, add the ```offset-sm-4``` to the second row like as the picture: ![Screenshot_5.png](https://cdn.steemitimages.com/DQmNp3Pkh3FDGH4SycbMBYK9VAKwJZXmm9G9Ki7ETQ3oRSL/Screenshot_5.png)
Let's save our codes and check our page. ![Screenshot_6.png](https://cdn.steemitimages.com/DQmSbeRgVMaqqNrs8rJnCWgZtdUZVsFLTx9a2a5bJmSsQtK/Screenshot_6.png) Let's do the text right-justify at first row with using ```text-right``` class. Then, center the image with using ```text-center``` class. Do the same things for the second row. Center the image with using ```text-center``` class.
Let's take a look our page.
![Screenshot_7.png](https://cdn.steemitimages.com/DQmU1RtKgbaFNqVRJJ3KUQc8PvoMd6PkahKkexXzQboJ4fx/Screenshot_7.png) Let's apply everything we do in the first two rows to the other rows. The codes for the first four rows are as follows: ```

JULY 2010

Our Humble Beginnings

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

JANUARY 2011

Facing Startup Battles

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

DECEMBER 2012

Enter The Dark Days

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

FEBRUARY 2014

Our Triumph

Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit aenean rhoncus posuere odio in tincidunt. Proin iaculis purus consequat sem cure digni ssim. Donec porttitora entum suscipit.

``` Come to the last row. ```

OUR
STORY
CONTINUES
...

``` We will add ```offset-sm-4``` class and let the text come under the pictures. Then, add ```yellow-text``` class to our ```p``` tag. ```

OUR
STORY
CONTINUES
...

``` ![Screenshot_8.png](https://cdn.steemitimages.com/DQmWcCeBYgZJ5REvTLB7rkAc9aZtpFeVPpKh5ryUVwajUMv/Screenshot_8.png) Before editing main.css file, add ```text-center``` class right next to ```aboutUs-top``` class. Now let's open and edit our main.css file. ``` #aboutUs { padding-top: 120px; padding-bottom: 30px; } ``` We defined the value of padding as 120 pixel from top and 30 pixel from bottom. ``` .aboutUs-top h3 { font-family: 'Montserrat', sans-serif; font-size: 40px; font-weight: 700; } ``` We set the font of the header ```h3``` tag in the ```aboutUs-top``` class as Montserrat. We set the font size to 40 pixel and set the font to bold. ``` .aboutUs-top p { font-family: 'Droid Serif', serif; font-size: 16px; font-style: italic; color: #777; margin-bottom: 70px; } ``` We set the font of the paragraph ```p``` tag in the ```aboutUs-top``` class as Droid Serif. We set the font size to 16 pixel and set the font color to #777. Margin-bottom has set to 70 pixel. And also font style is italic. ``` .aboutUs-content .row { margin-bottom: 90px; } ``` Margin-bottom has set to 90 pixel for each ```row``` class on the aboutUs-content class. ``` .aboutUs-content h4 { font-family: 'Montserrat', sans-serif; font-size: 18px; font-weight: 700; } ``` We set the font of the header ```h4``` tag in the ```aboutUs-content``` class as Montserrat. We set the font size to 18 pixel and set the font to bold. ``` .aboutUs-content p { font-family: 'Roboto Slab', serif; font-size: 14px; color: #777; } ``` We set the font of the header ```p``` tag in the ```aboutUs-content``` class as Roboto Slab. We set the font size to 14 pixel.
Let's start adding the timeline. ``` .aboutUs-content{ position: relative; } ``` We activated the interaction between objects and timeline in the ```aboutUs-content``` class. We will insert our timeline before the content of ```aboutUs-content``` class: ``` .aboutUs-content:before { top: 0; bottom: 0; position: absolute; content: " "; width: 4px; background-color: #f1f1f1; left: 50%; margin-left: -2px; } ``` By positioning our timeline in an absolute position, we ensure that it takes its position relative to ```aboutUs-content``` class that covers it. left: 50%; >> We centered the timeline. margin-left: -2px; >> We have exactly centered our timeline by taking 2 pixel (half the thickness) back.
Let's take a look our page.
![Screenshot_9.png](https://cdn.steemitimages.com/DQmVW9uwHwZWLEwhFyY1gpwUhiaY5kG4CxhQNNGH1SQN7pp/Screenshot_9.png) Finally, format our yellow circle. ``` .about-circle { position: relative; text-align: center; } ``` We centered the text. We will create a circle in the same format as the timeline. ``` .about-circle:before { top: 0; bottom: 0; position: absolute; content:" "; width: 176px; height: 176px; background-color: #fed136; border-radius: 170px; border: 7px solid #f1f1f1; left: 50%; margin-left: -89px; } ``` We created our circle. margin-left: -89px; >> We centered our circle by pulling left as far as the radius of the circle. Now let's edit the text with ```yellow-text``` class. ``` .about-circle .yellow-text { position: relative; z-index: 1; padding-top: 40px; font-family: 'Montserrat', sans-serif; font-size: 18px; font-weight: 700; color: white; } ``` z-index: 1; >> We made our text appear in the upper layer. padding-top: 40px; >>We have given this value because we measured the distance between the text and the circle by 40 pixels. We coded all other parameters (such as font type, color and size) to be the same as our design.
Let's save our codes and check our page. ![Screenshot_10.png](https://cdn.steemitimages.com/DQmVxBtQFdzHLDgPHAthf7TpwJGbm7JPBLofoXWwznCtzuA/Screenshot_10.png) ![Screenshot_11.png](https://cdn.steemitimages.com/DQmNT44Ed4YQoKQEMukGNwo5G4AaEYkcfMwBtpGioVK82sR/Screenshot_11.png) It looks pretty good. We came to the end of this part of our education. Thank you for your interest.