HTML5 and CSS3 Interview Questions & Answers

A warm welcome to the HTML5 and CSS3 Interview Questions & Answers course by Uplatz. Uplatz brings you this training on the most commonly asked interview questions and answers on HTML5 and CSS3. By learning and understanding deeply the popular interview questions (with answers) of HTML5 and CSS3, you can confidently apply for Web Developer / Frond End Developer / Full Stack Engineer (MERN, MEAN stacks) roles. This course explains the solutions to common questions asked in the recent Web Developer (HTMLand CSS) interviews and comes with a freely downloadable booklet on the same. HTML5 and CSS3 interview questions tutorial will help you crack the job interviews which can be a turning point in your career! With these top hand-picked HTML/CSS interview questions, you will be able to gain sound knowledge on HTML5 and CSS3 concepts and their practical usage in web development & design. BackgroundHTML5 is the latest version of the HTML language, HTML stands for Hyper Text Markup Language, its a universal World Wide Web Markup language which allows to create and design web pages to be viewed on the internet. HTML5 supports all existing web pages. The new features of HTML5 include: Support media element like video and audioLocal storageSupporting some new elements and custom attributesNew form elements like url, date, range, time, color etc. CSS is the key presentation technology that is used in website design. CSS stands for Cascading Style Sheets. CSS is a standard style sheet language used for describing the presentation (i.e. the layout and formatting) of the web pages. Prior to CSS, nearly all of the presentation attributes of HTML documents were contained within the HTML markup (specifically inside the HTML tags); all the font colors, background styles, element alignments, borders and sizes had to be explicitly described within the HTML. As a result, development of the large websites became a long and expensive process, since the style information were repeatedly added to every single page of the website. To solve this problem CSS was introduced in 1996 by the World Wide Web Consortium (W3C), which also maintains its standard. CSS was designed to enable the separation of presentation and content. Now web designers can move the formatting information of the web pages to a separate style sheet which results in considerably simpler HTML markup, and better maintainability. CSS3 is the latest version of the CSS specification. CSS3 adds several new styling features and improvements to enhance the web presentation capabilities. Some key features of CSS3 include: You can easily apply same style rules on multiple elements. You can control the presentation of multiple pages of a website with a single style sheet. You can present the same page differently on different devices. You can style dynamic states of elements such as hover, focus, etc. that isn’t possible otherwise. You can change the position of an element on a web page without changing the markup. You can alter the display of existing HTML elements. You can transform elements like scale, rotate, skew, etc. in 2D or 3D space. You can create animations and transitions effects without using any JavaScript. You can create print friendly version of your web pages. HTML5 and CSS3 together bring enhanced functionalities in web page development like multi-media support to add audio/Video files, canvas, real-time communication, local storage, and robust design. Embracing this technology will surely benefit you and your organisation. HTML5 Interview Questions (some examples)1) What is HTML5?HTML5 is the latest version of the HyperText Markup Language that can be referred to the WWW (World Wide Web) primary language, this markup language enhances a text file with bits of code, and this code which we can say as markup describes the structure of the document. HTML5 provides some standard features like that of CSS, HTML, JavaScript, and DOM, which in turn will reduce the requirement of external plugins. Its more markup to replace scripting, better error handling, etc. HTML5 is device independent. HTML5 introduces some new features that can be used to change the way of user interaction with documents including: Adding new parsing rules to enhance flexibility. Adding New attributes. Allow offline editing. Support (Web SQL), A common standard for storing data in SQL databases. Support Protocol and MIME handler registration.2) What is the difference between HTML and HTML5?Differences between HTML and HTML5 are given below: HTML5 has high-level video and audio support. High-level video and audio support is not a part of the version and specifications in the previous HTML. Canvas, SVG and other virtual vector graphics are supported in HTML5. In HTML, if we want to implement vector graphics, that was only possible by using third party library like VML, Silver-light, etc. In HTML5, SVG and MathML can be used in text. This is not possible in HTML. In HTML5, Web SQL database, application cache and web storage is used as permanent storage. Browser cache ca