What is CSS? And How It Works!
Summary
TLDRIn this video, Dale from 'Create a Pro Website' explains what CSS (Cascading Style Sheets) is and how it works. He covers how CSS is used to style websites, altering things like fonts, colors, and layouts. Dale demonstrates how CSS contributes to a website's appearance by disabling it on his own site to show the difference. He also explains key CSS concepts, including cascading (how styles are applied across elements), properties and values, and the importance of selectors (classes and IDs) for targeting specific elements. The video is beginner-friendly and designed to help viewers build professional websites with ease.
Takeaways
- 😀 CSS stands for Cascading Style Sheets and is essential for defining the appearance and style of a website.
- 📑 A modern website is built with three key components: HTML for structure, JavaScript for behavior, and CSS for appearance.
- 🎨 CSS controls visual elements such as colors, fonts, positioning, and even animations.
- 📉 The 'Cascading' part of CSS means that you can apply styles to multiple elements, and changes will cascade across the website, affecting all elements with the same class or identifier.
- 🔤 CSS allows you to assign various properties (like font size, color, weight) to elements, creating a consistent style across your site.
- 📄 A 'stylesheet' is essentially a file that contains all the custom CSS rules, which can be applied to multiple web pages.
- 🔍 Selectors in CSS are used to identify which elements to style, and these can be classes or IDs.
- 👥 A class in CSS is used to apply styles to multiple elements and is indicated by a dot (.), allowing you to group elements together for consistent styling.
- 🎯 An ID is used to style a specific, unique element on the webpage and is indicated by a hash (#).
- 💻 CSS significantly impacts the aesthetics and user experience of a website by making it visually appealing and cohesive.
Q & A
What are the three main components that make up a modern-day website?
-The three main components that make up a modern-day website are HTML, JavaScript, and CSS.
What role does HTML play in a website?
-HTML defines the structure of a website, determining the layout and how content is organized.
How does CSS contribute to the appearance of a website?
-CSS defines the overall appearance and style of a website, controlling elements like colors, fonts, positioning, and even animations.
What does the term 'CSS' stand for?
-CSS stands for Cascading Style Sheets.
What is meant by 'cascading' in Cascading Style Sheets?
-'Cascading' means that you can write CSS code to apply styles to multiple elements across a website at once, and the styles are applied in a hierarchy, allowing you to override or cascade them as needed.
How do you use CSS to change multiple elements on a website at once?
-By assigning the same class to multiple elements, you can apply CSS styles (like font or color) to all of them at once.
What is the difference between a CSS 'class' and an 'ID'?
-A 'class' can be applied to multiple elements to style them all at once, while an 'ID' is unique to one element and is used to apply styles to just that specific element.
How are CSS classes and IDs indicated in code?
-Classes are indicated with a dot (.) and IDs are indicated with a hash (#) in CSS code.
What are CSS properties and values?
-CSS properties define what aspect of an element you want to change (e.g., color, font size), and values specify what you want the property to be (e.g., red, 16px).
What is a 'style sheet' in the context of CSS?
-A style sheet is a file that contains a collection of CSS rules that can be applied across multiple web pages to maintain a consistent style.
Outlines
💻 Introduction to CSS
The speaker, Dale from Create a Pro Website, introduces CSS and explains its role in website development. He highlights that CSS, short for Cascading Style Sheets, is crucial for determining the appearance and style of websites, including colors, fonts, and element positioning. The video aims to break down CSS with visual examples to make it easier to understand.
🛠️ The Three Building Blocks of a Website
Dale explains the three essential files that form the backbone of any modern website: HTML, JavaScript, and CSS. HTML defines the structure, JavaScript manages the behavior, and CSS controls the appearance. Each of these elements plays a unique role in creating a functional and aesthetically pleasing website.
🎨 The Power of CSS in Visuals
To demonstrate the importance of CSS, Dale disables the CSS on his website using a Chrome extension and shows how the site looks without it. The result is an unattractive, unorganized page, highlighting how CSS significantly enhances the visual appeal of a website by managing key style elements.
📜 Understanding Cascading in CSS
Dale explains the meaning of the term 'cascading' in CSS, using an example where multiple sections of a website can be styled consistently by applying a single CSS rule. This cascading effect allows developers to assign attributes like fonts, colors, and sizes to multiple elements across a website, making style management efficient.
⚙️ Styling Various Elements with CSS
The speaker emphasizes that CSS is not just for text but can style any visual component of a website, including backgrounds, boxes, headers, footers, and images. He reinforces the idea that CSS is versatile and can be used to control every visual aspect of a site, down to the smallest detail.
📋 The Role of Style Sheets in CSS
Dale delves into the concept of 'style sheets' in CSS. Style sheets allow developers to save and apply a set of CSS rules across multiple web pages. This ensures a consistent look and feel throughout a website, regardless of the varying content and layouts of individual pages.
🏷️ CSS Selectors: Class vs. ID
The video explains the difference between two important CSS selectors: classes and IDs. Classes can be used to style multiple elements at once, indicated by a dot (.), while IDs are unique to a single element, marked by a hash (#). This distinction allows for flexible styling, either for broad changes or specific alterations to individual elements.
👍 Wrapping Up: The Value of CSS
Dale concludes the video by summarizing what CSS is and how it works. He encourages viewers to like the video if they found it helpful and to subscribe to his channel for more tutorials on building professional websites from home, even without coding experience.
Mindmap
Keywords
💡CSS
💡HTML
💡JavaScript
💡Cascading
💡Style
💡Sheets
💡Selectors
💡Class
💡ID
💡Property and Value
Highlights
CSS stands for Cascading Style Sheets and defines the overall appearance and style of a website.
CSS determines elements like colors, fonts, and positioning of visual elements on a website.
HTML defines the structure of a website, JavaScript defines its behavior, and CSS defines its style.
CSS can affect any visual element on your website, including text, backgrounds, headers, footers, and images.
CSS is responsible for animations and styling across various elements to improve website aesthetics.
The term 'cascading' in CSS refers to how styles are applied across multiple elements at once using properties and values.
You can apply CSS to multiple elements by assigning them a common class, allowing for consistent styling across a site.
A CSS property can define values like font size, color, or font weight to alter the look and feel of elements.
A style sheet is a file containing CSS settings that can be applied to different pages for a cohesive style.
Selectors are used to target specific elements for styling: class selectors apply to multiple elements, while ID selectors are unique to one element.
Class selectors are indicated with a dot (.) and are used to style multiple elements at once.
ID selectors are indicated with a hash (#) and are used to style one unique element specifically.
CSS allows for flexibility in design and layout changes without altering the website's content.
By disabling CSS in a website, the page will lose its style, demonstrating the significant role CSS plays in aesthetics.
CSS provides a way to separate content (HTML) from design (CSS), making it easier to maintain and update a website.
Transcripts
so let's talk about CSS what the heck is
it and how does it work well my name is
Dale from create a pro website and in
this video I'm gonna break it down for
you with visual examples and make it
super easy so let's jump in a modern-day
website is made up of three different
files or codes and these files are HTML
Javascript and CSS HTML defines the
structure of a website and JavaScript
defines the behavior of that website
while CSS defines the overall appearance
and style of that website and CSS is
short for cascading style sheet it helps
determine things like colors fonts
positioning of certain elements and even
a little bit of animation and in case
you don't believe me let me show you an
example I'm gonna go over to my site
create a pro website calm and I think
it's a pretty good looking site but I
have a Chrome extension called web
developer where I can disable the CSS
from the page and once I do that you can
see that it's not a very sexy-looking
site anymore so CSS makes up a pretty
important and aesthetic chunk of your
website now the first word of CSS is
cascading so what does that mean well
let's keep it simple and say that you
have a website that's made up of three
different sections and in each of these
sections is some heading text now let's
say that you want to assign all of these
texts with a class of heading two aka h2
and you want them to be open sans font
well you can write a bit of code that
will change all of them at once
throughout the entire website this is
why it's called cascading and you can
even assign multiple values such as font
size color weight and more and for the
record this is called a property and
this is called a value and it's not just
for text any visual element on your
website such as backgrounds boxes
headers footers images literally
anything can be altered with CSS so the
next word is style which makes perfect
sense because it alters the style of
your website so let's move on to the
third word
which is sheets and by this I mean style
sheets which is basically like writing a
bunch of custom CSS settings for things
like text backgrounds image properties
etc and saving it as one file
aka a sheet that you can apply to
multiple web pages all with different
content and layouts in order to achieve
a cohesive style throughout your entire
website now one more important part
about CSS is selectors and selectors are
what you use to identify certain
elements on your website and you have
class and you have ID so what's the
difference well to put it simply a class
is used to identify multiple elements on
your website so you can change the style
of all of those elements at once and
this is indicated with a dot function
while an ID is given to one specific
element on your website and is unique to
that element and cannot be used
elsewhere this is indicated by a hash
tag function and is used in order for
you to change that one element
specifically without affecting
everything else all right guys so that
was what is CSS and a little bit about
how it works and if you enjoyed this
video please hit that like button I've
got more videos like this on my channel
as well as tutorials that teach you how
to make a professional website from home
with no experience necessary
not even coding so feel free to
subscribe if you haven't already and I
will see you on the next video
you
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