What is a CSS float?

A CSS float is a property that is used to push an element to the left or right, allowing other elements to wrap around it. This is often used when a particular element needs to be taken out of the normal flow of the page.

For example, if you had an image on a page that you wanted to be on the right side of the page, you could use the float property to make it happen.


img {
float: right;

What are the advantages of using CSS?

1. CSS is more efficient than using HTML for styling as it separates the content from the presentation. For example, instead of using HTML to create a paragraph with a bold font, you can use CSS to style the paragraph with the font-weight property:

This text is bold.

2. CSS is easier to maintain than HTML, as it allows you to make changes to a single file instead of making changes to multiple HTML files. For example, if you want to change the font of your website, you can do it in one place by changing the font-family property in your CSS file.

3. CSS is more responsive than HTML, as it allows you to create different styles for different devices. For example, you can create a different style for mobile devices and desktop devices by using media queries.

4. CSS is more compatible with different browsers than HTML, as it allows you to create styles that are compatible with different browsers. For example, you can use vendor prefixes to create styles that are compatible with different versions of a browser.

What is CSS?

CSS stands for Cascading Style Sheets. It is a style sheet language used for describing the presentation of a document written in a markup language like HTML. CSS is used to define styles for your web pages, including the design, layout and variations in display for different devices and screen sizes.


body {
background-color: lightblue;
font-family: Arial, Helvetica, sans-serif;
margin: 0;

h1 {
color: navy;
margin-left: 20px;

What is the Jinja template engine?

Jinja is a template engine for Python. It is used to create HTML, XML or other markup formats that are returned to the user via an HTTP response. Jinja can generate any text-based format (HTML, XML, CSV, LaTeX, etc.).


{% for item in my_list %}

  • {{ item }}
  • {% endfor %}

    This code will loop through the items in the my_list variable and generate a list of

  • tags with the items as content.
  • What is the virtual DOM and how does it work?

    The virtual DOM (VDOM) is a programming concept where an ideal, or “virtual”, representation of a UI is kept in memory and synced with the “real” DOM by a library such as ReactDOM. The virtual DOM is a lightweight JavaScript object which originally is just the copy of the real DOM. It is a node tree that lists the elements, their attributes and content as Objects and their properties.

    Whenever a change is made, the virtual DOM will update instead of the real DOM. This allows for faster updates and better performance. When the virtual DOM has been updated, a diff algorithm will identify what has changed in the virtual DOM. Then, the real DOM will be updated with only the things that have changed.

    For example, if you have a button in your application that changes the background color of a page when clicked, the virtual DOM will first determine what has changed. In this case, it will recognize that the background color has changed. Next, the diff algorithm will identify the difference between the virtual DOM and the real DOM and update the real DOM with the new background color.

    What are the different types of lists available in HTML?

    The different types of lists available in HTML are:

    1. Unordered List: An unordered list is a list of items displayed using bullet symbols.


    • Apples
    • Oranges
    • Bananas

    2. Ordered List: An ordered list is a list of items displayed using numbers or letters.


    1. Apples
    2. Oranges
    3. Bananas

    3. Description List: A description list is a list of items with a description of each item.


    A round, red fruit.
    A round, orange fruit.
    A long, yellow fruit.