A paragraph always starts on a new line, and browsers automatically add some white space (a margin) before and after a paragraph.
This is CS50x, Harvard University introduction to the intellectual enterprises of computer science
and the art of programming for majors and non-majors alike, with or without prior programming experience.
As of Fall 2015, the on-campus version of CS50x, CS50, was Harvard largest course. 0550210584
Examples and usage guidelines for form control styles, layout options, and custom components for creating a wide variety of forms.
Easily make an element as wide or as tall with our width and height utilities. 0550210584
State and Lifecycle
This page introduces the concept of state and lifecycle in a React component. You can find a detailed component API reference here.
Consider the ticking clock example from one of the previous sections. In Rendering Elements, we have only learned one way to update the UI. We call ReactDOM.render() to change the rendered output:
Uniform Resource Locators A URL is another word for a web address.
A URL can be composed of words (w3schools.com), or an Internet Protocol (IP) address (188.8.131.52).
Most people enter the name when surfing, because names are easier to remember than numbers.
URL - Uniform Resource Locator
Web browsers request pages from web servers by using a URL.
A Uniform Resource Locator (URL) is used to address a document (or other data) on the web.
Text/Typography Bootstrap 4 uses a default font-size of 16px, and its line-height is 1.5.
The default font-family is "Helvetica Neue", Helvetica, Arial, sans-serif.
In addition, all p elements have margin-top: 0 and margin-bottom: 1rem (16px by default).
Grid Layout The CSS Grid Layout Module offers a grid-based layout system, with rows and columns, making it easier to design web pages without having to use floats and positioning.
Clearfix Quickly and easily clear floated content within a container by adding a clearfix utility.
Colors Convey meaning through color with a handful of color utility classes. Includes support for styling links with hover states, too.