Audio and Video
Audio and video tags are two important elements added to HTML5. Developers can include video and audio on their websites. For HTML5 video, you can use CSS and CSS3 to specify the format of the video tag. With HTML5, your videos will grow so fast that you don't need to create a video player.
Some navigation elements are menus, tables of content, and indexes. These elements make navigating the menu easier, creating a neat horizontal menu with text links, and helping screen-to-speech software correctly identify the document's basic navigation area.
The placeholder attribute provides a brief indication of the estimated value of the input field/text area. Before the user enters a value, a short prompt appears in the field.
Once the login type in the form is specified as an e-mail, the browser then learns the code to write an email in a valid format. The login email is automatically verified to check if the email ID format is correct.
For HTML5, if you use the application cache, the site's SQL database, or the site's backup, you can use the browser as a temporary backup.