CSS Colors and Values
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In HTML, a color can be specified using hue, saturation, and ______ (HSL).

lightness

The ______ parameter in RGBA specifies the opacity for a color.

alpha

A hue value can range from 0 to ______ in the HSL color model.

360

To specify that the background image should not scroll with the page, use the background-attachment property with ______ value.

<p>fixed</p> Signup and view all the answers

In HSLA, the addition of an alpha channel extends the ______ color values.

<p>HSL</p> Signup and view all the answers

Saturation is a percentage value, where 0% means a shade of ______.

<p>gray</p> Signup and view all the answers

The ______ property in CSS specifies the color of an element's border.

<p>border-color</p> Signup and view all the answers

To set a background image that displays only once, you can use the ______ property.

<p>background-repeat</p> Signup and view all the answers

A color can be specified in HTML using a predefined color ______.

<p>name</p> Signup and view all the answers

The RGB formula is defined as ______(red, green, blue).

<p>rgb</p> Signup and view all the answers

In CSS, you can set the border color using ______.

<p>border</p> Signup and view all the answers

Hexadecimal values for colors in HTML are specified in the form #__________________.

<p>rrggbb</p> Signup and view all the answers

To display the color white in RGB, you would use rgb(255, 255, ______).

<p>255</p> Signup and view all the answers

The predefined CSS attribute for changing background color is ______-color.

<p>background</p> Signup and view all the answers

To specify a color in HSL, you would use the format hsl(______, saturation, lightness).

<p>hue</p> Signup and view all the answers

For the color red in RGB, you would use the values rgb(______, 0, 0).

<p>255</p> Signup and view all the answers

The border-style property can have values like dotted, dashed, and solid, among others, but it can also define a ______ border, which is formed by two lines.

<p>double</p> Signup and view all the answers

Using border-style, the ______ value creates a 3D effect that appears to be grooved.

<p>groove</p> Signup and view all the answers

The border-style property would not display anything if the value is set to ______.

<p>none</p> Signup and view all the answers

The ______ property specifies the width of the borders and can have specific dimensions or pre-defined values.

<p>border-width</p> Signup and view all the answers

To create a border that visually appears to stand out like a ridge, use the ______ value in the border-style property.

<p>ridge</p> Signup and view all the answers

The border-radius property is used to add ______ borders to an element.

<p>rounded</p> Signup and view all the answers

In CSS, the border-color property is used to set the ______ of the borders.

<p>color</p> Signup and view all the answers

CSS margin properties create space around elements, outside of any defined ______.

<p>borders</p> Signup and view all the answers

If you want a border effect that looks recessed, you would use the ______ style.

<p>inset</p> Signup and view all the answers

A border with a dashed pattern can be created by setting the border-style to ______.

<p>dashed</p> Signup and view all the answers

The shorthand property for margins allows specification of values for ______, right, bottom, and left in one line.

<p>top</p> Signup and view all the answers

If the margin property has four values, the first value represents the margin for the ______ side.

<p>top</p> Signup and view all the answers

To generate space around an element's content, you can use the CSS ______ properties.

<p>padding</p> Signup and view all the answers

The display property is important for controlling ______ in CSS.

<p>layout</p> Signup and view all the answers

When using padding shorthand with two values, the first value represents the ______ and bottom padding.

<p>top</p> Signup and view all the answers

The default display value for most HTML elements is ______ or inline.

<p>block</p> Signup and view all the answers

A block-level element always starts on a new line and takes up the full ______ available.

<p>width</p> Signup and view all the answers

The <div> element is a ______-level element.

<p>block</p> Signup and view all the answers

An inline element does not start on a new line and only takes up as much ______ as necessary.

<p>width</p> Signup and view all the answers

The display: ______; property is commonly used with JavaScript to hide elements without deleting them.

<p>none</p> Signup and view all the answers

Setting the ______ of a block-level element will prevent it from stretching out to the edges of its container.

<p>width</p> Signup and view all the answers

You can set the margins to ______, to horizontally center the element within its container.

<p>auto</p> Signup and view all the answers

The browser adds a horizontal scrollbar when the browser window is smaller than the width of the ______.

<p>element</p> Signup and view all the answers

The <script> element uses display: none; as its ______.

<p>default</p> Signup and view all the answers

In CSS, the element inherits the float value of its ______.

<p>parent</p> Signup and view all the answers

To change the link color on hover in CSS, the code for the background is ______.

<p>#555</p> Signup and view all the answers

A dropdown box appears when the user moves the mouse over an ______.

<p>element</p> Signup and view all the answers

CSS transitions allows you to change property values ______.

<p>smoothly</p> Signup and view all the answers

To create a transition effect, you must specify the CSS property and the ______ of the effect.

<p>duration</p> Signup and view all the answers

CSS animations allow animation of most HTML elements without using ______ or Flash.

<p>JavaScript</p> Signup and view all the answers

The ______ property defines how long time an animation should take to complete.

<p>animation-duration</p> Signup and view all the answers

Keyframes hold what styles the element will have at certain ______.

<p>times</p> Signup and view all the answers

Study Notes

CSS Colors

  • Colors in CSS are specified using predefined color names (e.g., red, gray), or RGB, HEX, HSL, RGBA, HSLA values.
  • In HTML, colors can be defined using a color name within the style attribute (e.g., style="background-color:Gray;").
  • The background-color is a predefined CSS attribute used to change the background color of HTML elements.
  • Examples of predefined HTML elements include <p>, <h1> to <h6>, <body>, and <div>.
  • A sample HTML program demonstrates using predefined color names to change the background color of HTML elements like <h1> tags.

Color Values

  • Different types of color values include RGB, HEX, HSL, RGBA, and HSLA.
  • RGB: A color is defined by red, green, and blue values (e.g., rgb(255, 0, 0) is red). Each value ranges from 0 to 255. rgb(0,0,0) is black, and rgb(255,255,255) is white.
  • HEX: Colors are represented using hexadecimal values (e.g., #FF0000 is red). #000000 is black, and #FFFFFF is white.
  • HSL: Defines color using hue, saturation, and lightness (e.g., hsl(360, 100%, 50%)).

RGBA Values

  • An extension of RGB, adding an alpha channel for opacity.
  • Alpha values range from 0.0 (fully transparent) to 1.0 (fully opaque).

HSLA Values

  • An extension of HSL, adding an alpha channel for opacity.
  • Alpha values range from 0.0 (fully transparent) to 1.0 (fully opaque).

CSS Backgrounds

  • CSS properties control the background effects of elements.
  • background-color: Sets the background color.
  • background-image: Sets a background image.
  • background-repeat: Specifies how the background image repeats (e.g., no-repeat).
  • background-position: Controls the background image position.
  • background-attachment: Specifies if the background image is fixed or scrolls.

Border Style and Width

  • CSS border-style specifies how a border appears. e.g., dotted, dashed, solid, double, groove, ridge, inset, outset, none.
  • CSS border-width sets the width of the border, using values like thin, medium, thick, or a specified pixel value.

Border Color

  • border-color sets the border color.

Rounded Borders

  • border-radius creates rounded borders.

CSS Margins

  • CSS margin properties control the space outside the element's border.
  • Individual margin sides can be modified (margin-top, margin-right, margin-bottom, margin-left).
  • Shorthand property available to set all margins at once (margin).

CSS Padding

  • CSS padding properties control the space inside the element's border, around the content.
  • Individual padding sides can be modified (padding-top, padding-right, padding-bottom, padding-left).
  • Shorthand property available for setting all paddings for the element (padding).

CSS Display

  • The display property controls the layout of elements.
  • Common values include block and inline.
  • display: none; is used with JavaScript for showing/hiding elements.

Block-level Elements

  • Block-level elements start on a new line and span the full width of their container.

Inline Elements

  • Inline elements do not start on a new line and only take up as much width as needed.

CSS Width and Max-Width

  • width property sets the width of an element; max-width specifies the maximum allowable width. Margin set to auto can center content between left/right edges of the container.

CSS Overflow

  • overflow property controls the behavior of content exceeding an element's boundaries (visible, hidden, scroll, auto).

CSS Float

  • The float property is used to position elements.
  • left, right, none are the most commonly used values.

CSS Transitions

  • CSS transitions allow for smooth changes in property values over a defined duration.

CSS Animations

  • CSS animations animate HTML elements without JavaScript.
  • Defined by specifying keyframes that will adjust properties over time.

CSS Dropdown

  • A dropdown box that appears when the user hovers over an element using CSS. This technique positions one element relative to another.

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Related Documents

Advanced CSS PDF

Description

This quiz covers the various ways to specify colors in CSS, including predefined color names and different color value formats such as RGB, HEX, HSL, RGBA, and HSLA. You'll explore how to apply these color definitions directly within HTML elements using the style attribute. Test your knowledge of how color specifications enhance web design!

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