Make div fill height but not extend it (use scrollbar for overflow)

I have a specific layout that I want to achieve on my web page, namely: <a href="https://i.imgur.com/bx7iWBC.png" target="_blank"><img src="https://i.imgur.com/bx7iWBC.png"></a>

I have a specific layout that I want to achieve on my web page, namely:

The layout in the above image is built with the following HTML and bootstrap classes:

        <div className="ContentWrapper d-flex mh-100 flex-row h-100">
            <div className="ContentBody flex-column flex-fill">
                <div className="ContentHeader p-3 w-100">
                    <h2>Header</h2>
                </div>
                <div className="ContentMain w-100">
                    <h2>Scrollable div, should fill height, but not more than that</h2>
                </div>
            </div>
            <div className="Sidebar h-100">
                <h2>Sidebar content</h2>
            </div>
        </div>

Relevant CSS:

.ContentWrapper {
    background-color: red;
}
.ContentBody {

background-color: blue;

}
.ContentHeader {

background-color: yellow;

}
.ContentMain {

background-color: purple;

flex: 1;

}
.Sidebar {

background-color: green;

width: 500px;

}

However, when there is too much content in the purple part, the component starts to increase in height. I wish to prevent that and have a scrollbar in the purple component.

Furthermore, I heard that some flex properties work different in Chrome and Firefox. The idea is that I want my web page to have the same behavior in both browsers.

Build a Register & Login Form using PHP, HTML, CSS, Bootstrap and MySQL

In this tutorial you will learn and build a Responsive PHP Registration & Login Form using PHP, HTML, CSS, Bootstrap and MySQL

Welcome to this video on Responsive PHP User Login and Registration Form with PHP and MySQL From Scratch. In this course you will Learn and build a Responsive PHP Registration & Login Form using PHP, HTML, CSS, Bootstrap and MySQL. After watching this course you will be able to Create your own registration form connected to the MySQL database. In this course will explain step by step from scratch how to build a login system that you can customize it. The course covers all the aspects of HTML, CSS, JavaScript, PHP, MySQL along with Bootstrap Framework to create a real-time registration form. Making a Super Simple Registration System With PHP and MySQL will be easy ans step by step process.

All Code of this video can be found here: https://github.com/pknowledge/useraccounts
https://github.com/pknowledge/userlogin

How much knowledge of CSS and HTML do you need to know to use Bootstrap?

HTML 5 Tutorial: How to create a table using HTML tags and Stylesheet (CSS)

In this article, we want to show you how to create a table using HTML tags and Stylesheet (CSS). HTML table may vary depends on data and style requirements. Sometimes, in the real application, we use an HTML table as a layout of the Email template in HTML format.

HTML Table uses to represent tabular data like in the Excel Application and arrange the layout of the Web View.

There are some common HTML tags that use by HTML table:

Before start practicing HTML 5 table, make sure all

tag put inside complete and tag.

<!DOCTYPE html>
<html>
 <head>
  <title>Basic HTML Table</title>
 </head>
 <body>
  <table></table>
 </body>
</html>

Basic HTML Table

Here is an example of a basic HTML table or common use of the above HTML tags to define or create a table.

<table>
 <tr>
  <th>No.</th>
  <th>Full Name</th>
  <th>Position</th>
  <th>Salary</th>
 </tr>
 <tr>
  <td>1</td>
  <td>Bill Gates</td>
  <td>Founder Microsoft</td>
  <td><table>
 <tr>
  <th>No.</th>
  <th>Full Name</th>
  <th>Position</th>
  <th>Salary</th>
 </tr>
 <tr>
  <td>1</td>
  <td>Bill Gates</td>
  <td>Founder Microsoft</td>
  <td>$1000</td>
 </tr>
 <tr>
  <td>2</td>
  <td>Steve Jobs</td>
  <td>Founder Apple</td>
  <td>$1200</td>
 </tr>
 <tr>
  <td>3</td>
  <td>Larry Page</td>
  <td>Founder Google</td>
  <td>$1100</td>
 </tr>
 <tr>
  <td>4</td>
  <td>Mark Zuckeberg</td>
  <td>Founder Facebook</td>
  <td>$1300</td>
 </tr>
</table>
000</td>
 </tr>
 <tr>
  <td>2</td>
  <td>Steve Jobs</td>
  <td>Founder Apple</td>
  <td><table>
 <tr>
  <th>No.</th>
  <th>Full Name</th>
  <th>Position</th>
  <th>Salary</th>
 </tr>
 <tr>
  <td>1</td>
  <td>Bill Gates</td>
  <td>Founder Microsoft</td>
  <td>$1000</td>
 </tr>
 <tr>
  <td>2</td>
  <td>Steve Jobs</td>
  <td>Founder Apple</td>
  <td>$1200</td>
 </tr>
 <tr>
  <td>3</td>
  <td>Larry Page</td>
  <td>Founder Google</td>
  <td>$1100</td>
 </tr>
 <tr>
  <td>4</td>
  <td>Mark Zuckeberg</td>
  <td>Founder Facebook</td>
  <td>$1300</td>
 </tr>
</table>
200</td>
 </tr>
 <tr>
  <td>3</td>
  <td>Larry Page</td>
  <td>Founder Google</td>
  <td><table>
 <tr>
  <th>No.</th>
  <th>Full Name</th>
  <th>Position</th>
  <th>Salary</th>
 </tr>
 <tr>
  <td>1</td>
  <td>Bill Gates</td>
  <td>Founder Microsoft</td>
  <td>$1000</td>
 </tr>
 <tr>
  <td>2</td>
  <td>Steve Jobs</td>
  <td>Founder Apple</td>
  <td>$1200</td>
 </tr>
 <tr>
  <td>3</td>
  <td>Larry Page</td>
  <td>Founder Google</td>
  <td>$1100</td>
 </tr>
 <tr>
  <td>4</td>
  <td>Mark Zuckeberg</td>
  <td>Founder Facebook</td>
  <td>$1300</td>
 </tr>
</table>
100</td>
 </tr>
 <tr>
  <td>4</td>
  <td>Mark Zuckeberg</td>
  <td>Founder Facebook</td>
  <td><table>
 <tr>
  <th>No.</th>
  <th>Full Name</th>
  <th>Position</th>
  <th>Salary</th>
 </tr>
 <tr>
  <td>1</td>
  <td>Bill Gates</td>
  <td>Founder Microsoft</td>
  <td>$1000</td>
 </tr>
 <tr>
  <td>2</td>
  <td>Steve Jobs</td>
  <td>Founder Apple</td>
  <td>$1200</td>
 </tr>
 <tr>
  <td>3</td>
  <td>Larry Page</td>
  <td>Founder Google</td>
  <td>$1100</td>
 </tr>
 <tr>
  <td>4</td>
  <td>Mark Zuckeberg</td>
  <td>Founder Facebook</td>
  <td>$1300</td>
 </tr>
</table>
300</td>
 </tr>
</table>

Output:

As a default, HTML 5 table not defined with border, you should add the border manually in each table cells.

HTML Table with Border

To add a basic border to HTML 5 table, simply add this style attribute in

tag.

<table style="border: solid 1px #aaa999;">

Output:

As you can see, Table Border only draw lines to the table only and cells left borderless. To make border for all cells, add style attribute to all and all .

<table style="border: solid 1px #aaa999;">
 <tr>
  <th style="border: solid 1px #aaa999;">No.</th>
  <th style="border: solid 1px #aaa999;">Full Name</th>
  <th style="border: solid 1px #aaa999;">Position</th>
  <th style="border: solid 1px #aaa999;">Salary</th>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">1</td>
  <td style="border: solid 1px #aaa999;">Bill Gates</td>
  <td style="border: solid 1px #aaa999;">Founder Microsoft</td>
  <td style="border: solid 1px #aaa999;"><table style="border: solid 1px #aaa999;">
 <tr>
  <th style="border: solid 1px #aaa999;">No.</th>
  <th style="border: solid 1px #aaa999;">Full Name</th>
  <th style="border: solid 1px #aaa999;">Position</th>
  <th style="border: solid 1px #aaa999;">Salary</th>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">1</td>
  <td style="border: solid 1px #aaa999;">Bill Gates</td>
  <td style="border: solid 1px #aaa999;">Founder Microsoft</td>
  <td style="border: solid 1px #aaa999;">$1000</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">2</td>
  <td style="border: solid 1px #aaa999;">Steve Jobs</td>
  <td style="border: solid 1px #aaa999;">Founder Apple</td>
  <td style="border: solid 1px #aaa999;">$1200</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">3</td>
  <td style="border: solid 1px #aaa999;">Larry Page</td>
  <td style="border: solid 1px #aaa999;">Founder Google</td>
  <td style="border: solid 1px #aaa999;">$1100</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">4</td>
  <td style="border: solid 1px #aaa999;">Mark Zuckeberg</td>
  <td style="border: solid 1px #aaa999;">Founder Facebook</td>
  <td style="border: solid 1px #aaa999;">$1300</td>
 </tr>
</table>
000</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">2</td>
  <td style="border: solid 1px #aaa999;">Steve Jobs</td>
  <td style="border: solid 1px #aaa999;">Founder Apple</td>
  <td style="border: solid 1px #aaa999;"><table style="border: solid 1px #aaa999;">
 <tr>
  <th style="border: solid 1px #aaa999;">No.</th>
  <th style="border: solid 1px #aaa999;">Full Name</th>
  <th style="border: solid 1px #aaa999;">Position</th>
  <th style="border: solid 1px #aaa999;">Salary</th>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">1</td>
  <td style="border: solid 1px #aaa999;">Bill Gates</td>
  <td style="border: solid 1px #aaa999;">Founder Microsoft</td>
  <td style="border: solid 1px #aaa999;">$1000</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">2</td>
  <td style="border: solid 1px #aaa999;">Steve Jobs</td>
  <td style="border: solid 1px #aaa999;">Founder Apple</td>
  <td style="border: solid 1px #aaa999;">$1200</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">3</td>
  <td style="border: solid 1px #aaa999;">Larry Page</td>
  <td style="border: solid 1px #aaa999;">Founder Google</td>
  <td style="border: solid 1px #aaa999;">$1100</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">4</td>
  <td style="border: solid 1px #aaa999;">Mark Zuckeberg</td>
  <td style="border: solid 1px #aaa999;">Founder Facebook</td>
  <td style="border: solid 1px #aaa999;">$1300</td>
 </tr>
</table>
200</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">3</td>
  <td style="border: solid 1px #aaa999;">Larry Page</td>
  <td style="border: solid 1px #aaa999;">Founder Google</td>
  <td style="border: solid 1px #aaa999;"><table style="border: solid 1px #aaa999;">
 <tr>
  <th style="border: solid 1px #aaa999;">No.</th>
  <th style="border: solid 1px #aaa999;">Full Name</th>
  <th style="border: solid 1px #aaa999;">Position</th>
  <th style="border: solid 1px #aaa999;">Salary</th>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">1</td>
  <td style="border: solid 1px #aaa999;">Bill Gates</td>
  <td style="border: solid 1px #aaa999;">Founder Microsoft</td>
  <td style="border: solid 1px #aaa999;">$1000</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">2</td>
  <td style="border: solid 1px #aaa999;">Steve Jobs</td>
  <td style="border: solid 1px #aaa999;">Founder Apple</td>
  <td style="border: solid 1px #aaa999;">$1200</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">3</td>
  <td style="border: solid 1px #aaa999;">Larry Page</td>
  <td style="border: solid 1px #aaa999;">Founder Google</td>
  <td style="border: solid 1px #aaa999;">$1100</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">4</td>
  <td style="border: solid 1px #aaa999;">Mark Zuckeberg</td>
  <td style="border: solid 1px #aaa999;">Founder Facebook</td>
  <td style="border: solid 1px #aaa999;">$1300</td>
 </tr>
</table>
100</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">4</td>
  <td style="border: solid 1px #aaa999;">Mark Zuckeberg</td>
  <td style="border: solid 1px #aaa999;">Founder Facebook</td>
  <td style="border: solid 1px #aaa999;"><table style="border: solid 1px #aaa999;">
 <tr>
  <th style="border: solid 1px #aaa999;">No.</th>
  <th style="border: solid 1px #aaa999;">Full Name</th>
  <th style="border: solid 1px #aaa999;">Position</th>
  <th style="border: solid 1px #aaa999;">Salary</th>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">1</td>
  <td style="border: solid 1px #aaa999;">Bill Gates</td>
  <td style="border: solid 1px #aaa999;">Founder Microsoft</td>
  <td style="border: solid 1px #aaa999;">$1000</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">2</td>
  <td style="border: solid 1px #aaa999;">Steve Jobs</td>
  <td style="border: solid 1px #aaa999;">Founder Apple</td>
  <td style="border: solid 1px #aaa999;">$1200</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">3</td>
  <td style="border: solid 1px #aaa999;">Larry Page</td>
  <td style="border: solid 1px #aaa999;">Founder Google</td>
  <td style="border: solid 1px #aaa999;">$1100</td>
 </tr>
 <tr>
  <td style="border: solid 1px #aaa999;">4</td>
  <td style="border: solid 1px #aaa999;">Mark Zuckeberg</td>
  <td style="border: solid 1px #aaa999;">Founder Facebook</td>
  <td style="border: solid 1px #aaa999;">$1300</td>
 </tr>
</table>
300</td>
 </tr>
</table>

If you want a simple coding without writing a style for each cells, use