Responsive Web Design
Responsive web design is about creating web pages that look good on all devices!
A responsive web design will automatically adjust for different screen sizes and viewports. What is Responsive Web Design?
Responsive Web Design is about using HTML and CSS to automatically resize, hide, shrink, or enlarge, a website, to make it look good on all devices (desktops, tablets, and phones):
HTML Versus XHTML
XHTML is a stricter, more XML-based version of HTML.
What is XHTML?
XHTML stands for EXtensible HyperText Markup Language
XHTML is a stricter, more XML-based version of HTML
XHTML is HTML defined as an XML application
XHTML is supported by all major browsers
XML is a markup language where all documents must be marked up correctly (be "well-formed").
XHTML was developed to make HTML more extensible and flexible to work with other data formats (such as XML). In addition, browsers ignore errors in HTML pages, and try to display the website even if it has some errors in the markup. So XHTML comes with a much stricter error handling 19053
The easiest way to play videos in HTML, is to use YouTube.
Struggling with Video Formats?
Earlier in this tutorial, you have seen that you might have to convert your videos to different formats to make them play in all browsers.
Converting videos to different formats can be difficult and time-consuming.
An easier solution is to let YouTube play the videos in your web page.
YouTube Video Id
YouTube will display an id (like tgbN6m87vqY), when you save (or play) a video.
You can use this id, and refer to your video in the HTML code.
Playing a YouTube Video in HTML
To play your video on a web page, do the following:
Upload the video to YouTube
Take a note of the video id
Define an iframe element in your web page
Let the src attribute point to the video URL
Use the width and height attributes to specify the dimension of the player
Convey meaning through color with a handful of color utility classes. Includes support for styling links with hover states, too.
Control the visibility, without modifying the display, of elements with visibility utilities. 19053
What Is React?
It lets you compose complex UIs from small and isolated pieces of code called “components”. React has a few different kinds of components, but we’ll start with React.Component subclasses:
Progress Documentation and examples for using Bootstrap custom progress bars featuring support for stacked bars, animated backgrounds, and text labels.
Paragraphs A paragraph always starts on a new line, and browsers automatically add some white space (a margin) before and after a paragraph.
Pagination Documentation and examples for showing pagination to indicate a series of related content exists across multiple pages.
Background Images Different Images for Different Devices
A large image can be perfect on a big computer screen, but useless on a small device. Why load a large image when you have to scale it down anyway? To reduce the load, or for any other reasons, you can use media queries to display different images on different devices.