CSS Colors

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CSS Colors

In CSS, colors are specified by using a predefined color name, or with a RGB, HEX, HSL, RGBA, HSLA value.

CSS Color Names

In CSS, a color can be specified by using a predefined color name:

Tomato
Orange
DodgerBlue
MediumSeaGreen
Gray
SlateBlue
Violet
LightGray

Try it Yourself »

CSS/HTML support 140 standard color names.

CSS Background Color

You can set the background color for HTML elements:

Hello World

Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat.

Example

<h1 style="background-color:DodgerBlue;">Hello World</h1>
<p style="background-color:Tomato;">Lorem ipsum...</p>

Try it Yourself »

CSS Text Color

You can set the color of text:

Hello World

Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat.

Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat.

Example

<h1 style="color:Tomato;">Hello World</h1>
<p style="color:DodgerBlue;">Lorem ipsum...</p>
<p style="color:MediumSeaGreen;">Ut wisi enim...</p>

Try it Yourself »

CSS Border Color

You can set the color of borders:

Hello World

Example

<h1 style="border:2px solid Tomato;">Hello World</h1>
<h1 style="border:2px solid DodgerBlue;">Hello World</h1>
<h1 style="border:2px solid Violet;">Hello World</h1>

Try it Yourself »

CSS Color Values

In CSS, colors can also be specified using RGB values, HEX values, HSL values, RGBA values, and HSLA values:

Same as color name "Tomato":

rgb(255, 99, 71)
#ff6347
hsl(9, 100%, 64%)

Same as color name "Tomato", but 50% transparent:

rgba(255, 99, 71, 0.5)
hsla(9, 100%, 64%, 0.5)

Example

Try it Yourself »

Learn more about Color Values

You will learn more about RGB, HEX and HSL in the next chapters.

Video: CSS Colors Introduction

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CSS 12-Column Grid Layout
CSS 12-Column Grid Layout

Cavalry发布主题在教程

CSS 12-Column Grid Layout CSS 12-Column Grid Layout A 12-column grid is a common and flexible method for structuring web page content, particularly for responsive web design. The 12-column grid system divides the available horizontal space into 12 equal-width columns, allowing for precise placement and sizing of elements within the layout. Benefits of a 12-Column Grid Flexibility: The number 12 is highly divisible. Designers can easily create designs with halves, thirds, and quarters (2 columns of 6, 3 columns of 4, 4 columns of 3). Responsiveness: A 12-column grid is ideal for building responsive websites that adapt to different screen sizes (desktop, tablet, or mobile) with mediaqueries. This provides a consistent user experience across all platforms. Efficiency: Having a pre-defined structure speeds up the design process. Here is how to create a basic 12-column CSS Grid layout: Define the Grid Container Apply display: grid; to the grid container. Create the 12 Columns Use the grid-template-columns property to define the 12 columns. The code repeat(12, [col-start] 1fr); creates a 12-column grid with equal-width, and names the start line of each column track col-start. repeat(12,..): Tells the grid to repeat the following track definition 12 times, resulting in 12 columns. [col-start]: This creates a named grid line. Because it is repeated 12 times, you will have 12 lines named col-start. This is useful for placing grid items at specific start points within the grid. 1fr: A fractional unit that represents one fraction of the total available space in the grid container. By using 1fr, each of the 12 columns will be an equal, fluid width. Place the Grid Items Grid items can then be placed and sized across these 12 columns using grid-column. To make a grid item span a certain number of columns, use grid-column: span <number>; or grid-column: <start-line> / span <number>;. You can also define the start and end grid lines for an item using grid-column: <start-line> / <end-line>;. Use Mediaqueries to Add Breakpoints Always design for mobile first: Here we display the sections in the source order (from top to bottom) for screens less than 576 pixels wide. Then, we go to a two-column layout for screens between 576 and 767 pixels wide. Then, we go to a three-column layout for screens over 767 pixels wide. Example Complete example of a 12-column grid layout: * { box-sizing: border-box; } .container { display: grid; grid-template-columns: repeat(12, [col-start] 1fr); gap: 20px; } nav ul { list-style: none; margin: 0; padding: 0; } /* Mobile first */ .container > * { border: 1px solid green; background-color: beige; padding: 10px; grid-column: col-start / span 12; } @media (min-width: 576px) { .sidebar { grid-column: col-start / span 3; grid-row: 3; } .ads { grid-column: col-start / span 3; } .content, .footer { grid-column: col-start 4 / span 9; } nav ul { display: flex; justify-content: space-between; } } @media (min-width: 768px) { .nav { grid-column: col-start / span 2; grid-row: 2 / 4; } .content { grid-column: col-start 3 / span 8; grid-row: 2 / 4; } .sidebar { grid-column: col-start 11 / span 2; } .ads { grid-column: col-start 11 / span 2; } .footer { grid-column: col-start / span 12; } nav ul { flex-direction: column; } } Try it Yourself » ★ +1 Sign in to track progress
- 11分钟前11分钟
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CSS Grid Layout
CSS Grid Layout

Cavalry发布主题在教程

CSS Grid Layout CSS Grid Layout Module The Grid Layout Module offers a grid-based layout system, with rows and columns. The Grid Layout Module allows developers to easily create complex web layouts. The Grid Layout Module makes it easy to design a responsive layout structure, without using float or positioning. My Header Link 1 Link 2 Link 3 Lorem IpsumLorem ipsum odor amet, consectetuer adipiscing elit. Ridiculus sit nisl laoreet facilisis aliquet. Potenti dignissim litora eget montes rhoncus sapien neque urna. Cursus libero sapien integer magnis ligula lobortis quam ut. Footer Try it Yourself » Grid vs. Flexbox CSS Grid is used for two-dimensional layout, with rows AND columns. CSS Flexbox is used for one-dimensional layout, with rows OR columns. CSS Grid Components A grid always consists of: A Grid Container - The parent (container) element, where the display property is set to grid or inline-grid One or more Grid Items - The direct children of the grid container automatically becomes grid items A Grid Container with Five Grid Items The element below represents a grid container (the blue area) with five grid items. 1 2 3 4 5 Example A grid container with five grid items: <html> <head> <style> .container { display: grid; grid-template-columns: auto auto auto; background-color: dodgerblue; padding: 10px; } .container div { background-color: #f1f1f1; border: 1px solid black; padding: 10px; font-size: 30px; text-align: center; } </style> </head> <body> <div class="container"> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>5</div> </div> </body> </html> Try it Yourself » Note: You will learn more about grid containers and grid items in the next chapters. All CSS Grid Properties Property Description align-content Vertically aligns the whole grid inside the container (when total grid size is smaller than container) align-items Specifies the default alignment for items inside a flexbox or grid container align-self Aligns the content for a specific grid item along the column axis display Specifies the display behavior (the type of rendering box) of an element column-gap Specifies the gap between the columns gap A shorthand property for the row-gap and the column-gap properties grid A shorthand property for the grid-template-rows, grid-template-columns, grid-template-areas, grid-auto-rows, grid-auto-columns, and the grid-auto-flow properties grid-area Either specifies a name for the grid item, or this property is a shorthand property for the grid-row-start, grid-column-start, grid-row-end, and grid-column-end properties grid-auto-columns Specifies a default column size grid-auto-flow Specifies how auto-placed items are inserted in the grid grid-auto-rows Specifies a default row size grid-column A shorthand property for the grid-column-start and the grid-column-end properties grid-column-end Specifies where to end the grid item grid-column-start Specifies where to start the grid item grid-row A shorthand property for the grid-row-start and the grid-row-end properties grid-row-end Specifies where to end the grid item grid-row-start Specifies where to start the grid item grid-template A shorthand property for the grid-template-rows, grid-template-columns and grid-areas properties grid-template-areas Specifies how to display columns and rows, using named grid items grid-template-columns Specifies the size of the columns, and how many columns in a grid layout grid-template-rows Specifies the size of the rows in a grid layout justify-content Horizontally aligns the whole grid inside the container (when total grid size is smaller than container) justify-self Aligns the content for a specific grid item along the row axis place-self A shorthand property for the align-self and the justify-self properties place-content A shorthand property for the align-content and the justify-content properties row-gap Specifies the gap between the grid rows ★ +1 Sign in to track progress
- 11分钟前11分钟
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CSS Responsive Flexbox
CSS Responsive Flexbox

Cavalry发布主题在教程

CSS Responsive Flexbox Responsive Flexbox You learned from the CSS Media Queries chapter that you can use media queries to create different layouts for different screen sizes and devices. For example, if you want to create a three-column layout for large screen sizes, and a one-column layout for small screen sizes (such as phones), you can change the flex-direction from row to column at a specific breakpoint (600px in the example below): 1 2 3 Resize the browser window to see the effect. Example .flex-container { display: flex; flex-direction: row; } .flex-item { background-color: #f1f1f1; padding: 10px; font-size: 30px; text-align: center; width: 100%; } /* Make a one column-layout instead of three-column layout */ @media (max-width: 600px) { .flex-container { flex-direction: column; } } Try it Yourself » Another way is to change the percentage of the flex property of the flex items to create different layouts for different screen sizes. Note that we also have to include flex-wrap: wrap; on the flex container for this example to work: Example .flex-container { display: flex; flex-wrap: wrap; } .flex-item { background-color: #f1f1f1; padding: 10px; text-align: center; font-size: 30px; flex: 33.3%; } /* Make a one column-layout instead of a three-column layout */ @media (max-width: 600px) { .flex-item { flex: 100%; } } Try it Yourself » Responsive Image Gallery using Flexbox Here, we use media queries together with flexbox to create a responsive image gallery: Try it Yourself » Responsive Website using Flexbox Use flexbox to create a responsive website, containing a flexible navigation bar and flexible content: Try it Yourself » ★ +1 Sign in to track progress
- 11分钟前11分钟
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CSS Colors

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CSS Colors

CSS Colors

CSS Color Names

CSS Background Color

Example

CSS Text Color

Hello World

Example

CSS Border Color

Hello World

Hello World

Hello World

Example

CSS Color Values

Example

Learn more about Color Values

Video: CSS Colors Introduction

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CSS 12-Column Grid Layout

CSS Grid Layout

CSS Responsive Flexbox

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