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Questions and Answers
What is the main purpose of using CSS?
What is the main purpose of using CSS?
- To create a database for a web page
- To define the structure of a web page
- To define styles for your web pages, including the design and layout (correct)
- To add interactivity to a web page
What is the CSS syntax to select HTML elements based on the element name?
What is the CSS syntax to select HTML elements based on the element name?
- Using the id attribute of an HTML element
- Using the element name as a selector (correct)
- Using the tag name as a selector
- Using the class attribute of an HTML element
What is the purpose of the CSS id selector?
What is the purpose of the CSS id selector?
- To select a specific HTML element based on its id (correct)
- To select multiple HTML elements with the same class
- To select all HTML elements on the page
- To select the first HTML element on the page
What is the correct syntax to write a CSS comment?
What is the correct syntax to write a CSS comment?
What is the CSS property to change the text color of an HTML element?
What is the CSS property to change the text color of an HTML element?
What is the purpose of the CSS declaration block?
What is the purpose of the CSS declaration block?
What is the correct CSS syntax to set the background color of the body element to light blue?
What is the correct CSS syntax to set the background color of the body element to light blue?
What is the CSS property to set the alignment of text to the center?
What is the CSS property to set the alignment of text to the center?
What is the purpose of the background-color property in CSS?
What is the purpose of the background-color property in CSS?
What is the format of an RGB color value in CSS?
What is the format of an RGB color value in CSS?
What is the purpose of the alpha parameter in an RGBA color value?
What is the purpose of the alpha parameter in an RGBA color value?
What is the default value of the red parameter in an RGB color value?
What is the default value of the red parameter in an RGB color value?
What is the HEX equivalent of the RGB color value rgb(255, 99, 71)?
What is the HEX equivalent of the RGB color value rgb(255, 99, 71)?
What is the purpose of the rgba function in CSS?
What is the purpose of the rgba function in CSS?
What is the range of values for the red, green, and blue parameters in an RGB color value?
What is the range of values for the red, green, and blue parameters in an RGB color value?
What is the difference between an RGB color value and an RGBA color value?
What is the difference between an RGB color value and an RGBA color value?
What has the highest priority in CSS, and will override external and internal styles and browser defaults?
What has the highest priority in CSS, and will override external and internal styles and browser defaults?
Where do you place CSS comments in the code?
Where do you place CSS comments in the code?
What is the purpose of CSS comments?
What is the purpose of CSS comments?
How do you specify colors in CSS?
How do you specify colors in CSS?
What is the purpose of the CSS background color property?
What is the purpose of the CSS background color property?
What happens if an internal style is defined before the link to the external style sheet?
What happens if an internal style is defined before the link to the external style sheet?
What is the correct way to write a CSS comment?
What is the correct way to write a CSS comment?
What is the purpose of CSS styles?
What is the purpose of CSS styles?
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Study Notes
CSS Basics
- CSS is used to style an HTML document, describing how HTML elements should be displayed.
- CSS is essential for defining styles for web pages, including design, layout, and variations in display for different devices and screen sizes.
CSS Syntax
- A CSS selector points to the HTML element you want to style.
- The declaration block contains one or more declarations separated by semicolons.
- Each declaration includes a CSS property name and a value, separated by a colon.
- Multiple CSS declarations are separated with semicolons, and declaration blocks are surrounded by curly braces.
CSS Selectors
- CSS selectors are used to "find" (or select) the HTML elements you want to style.
- The CSS element selector selects HTML elements based on the element name.
- The CSS id selector uses the id attribute of an HTML element to select a specific element.
CSS Text and Border Colors
- You can set the color of text using the
colorproperty. - You can set the color of borders using the
border-colorproperty.
CSS Color Values
- Colors can be specified using color names, RGB values, HEX values, HSL values, RGBA values, and HSLA values.
- RGB color values represent RED, GREEN, and BLUE light sources.
- RGBA color values are an extension of RGB color values with an alpha channel, which specifies the opacity for a color.
CSS Backgrounds
- The CSS background properties are used to add background effects for elements.
- The
background-colorproperty specifies the background color of an element.
CSS Cascading Order
- When there is more than one style specified for an HTML element, the styles will "cascade" into a new "virtual" style sheet by the following rules:
- Inline style (inside an HTML element)
- External and internal style sheets (in the head section)
- Browser default
- Inline style has the highest priority and will override external and internal styles and browser defaults.
CSS Comments
- Comments are used to explain the code and may help when you edit the source code at a later date.
- Comments are ignored by browsers.
- A CSS comment is placed inside the `
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