Фон для TR

background-image

Устанавливает фоновое изображение для элемента. Если одновременно для элемента задан цвет фона, он будет показан, пока фоновая картинка не загрузится полностью. То же произойдет, если изображения не доступны или их показ в браузере отключен. В случае наличия в рисунке прозрачных областей, через них будет проглядывать фоновый цвет. В CSS3 допустимо указывать несколько фоновых изображений, перечисляя их параметры через запятую.

Синтаксис

background-image: url(путь к файлу) | none | inherit

background-image: url(путь к файлу) | none[, url(путь к файлу) | none]*

Значения

url В качестве значения используется путь к графическому файлу, который указывается внутри конструкции url() . Путь к файлу при этом можно писать как в кавычках (двойных или одинарных), так и без них. none Отменяет фоновое изображение для элемента. inherit Наследует значение родителя.

HTML5 CSS2.1 IE Cr Op Sa Fx

Объектная модель

[window.]document.getElementById(» elementID «).style.backgroundImage

Браузеры

Internet Explorer до версии 7.0 включительно применяет фон к внутренней части границы элемента, у которого установлено свойство hasLayout . Если у элемента нет hasLayout , свойство background-image будет учитывать границы элемента, как это и задано в спецификации. Разница в отображении будет заметна, если границы пунктирные ( dashed или dotted ), а не сплошные.

Если для элемента значение overflow установлено как scroll или auto , в Internet Explorer 8 будет вертикальная задержка в один пиксел при прокрутке фона.

Internet Explorer до версии 7.0 включительно не поддерживает значение inherit .

HTML5 CSS2.1 IE Cr Op Sa Fx

        
 
1
2
3
 
 
  

Результат данного примера в браузере Chrome показан на рис. 1. Браузер Internet Explorer, Opera и Firefox корректно отображают фон для строки (рис. 2).

Рис. 1. Повторение фона для каждой ячейки

Рис. 2. Фон для всей строки

Источник

HTML Background Images

A background image can be specified for almost any HTML element.

Background Image on a HTML element

To add a background image on an HTML element, use the HTML style attribute and the CSS background-image property:

Example

Add a background image on a HTML element:

You can also specify the background image in the element, in the section:

Example

Specify the background image in the element:

Background Image on a Page

If you want the entire page to have a background image, you must specify the background image on the element:

Example

Add a background image for the entire page:

Background Repeat

If the background image is smaller than the element, the image will repeat itself, horizontally and vertically, until it reaches the end of the element:

Example

To avoid the background image from repeating itself, set the background-repeat property to no-repeat .

Example

Background Cover

If you want the background image to cover the entire element, you can set the background-size property to cover.

Also, to make sure the entire element is always covered, set the background-attachment property to fixed:

This way, the background image will cover the entire element, with no stretching (the image will keep its original proportions):

Example

Background Stretch

If you want the background image to stretch to fit the entire element, you can set the background-size property to 100% 100% :

Try resizing the browser window, and you will see that the image will stretch, but always cover the entire element.

Example

Learn More CSS

From the examples above you have learned that background images can be styled by using the CSS background properties.

To learn more about CSS background properties, study our CSS Background Tutorial.

Источник

background-image

The background-image CSS property sets one or more background images on an element.

Try it

The background images are drawn on stacking context layers on top of each other. The first layer specified is drawn as if it is closest to the user.

The borders of the element are then drawn on top of them, and the background-color is drawn beneath them. How the images are drawn relative to the box and its borders is defined by the background-clip and background-origin CSS properties.

If a specified image cannot be drawn (for example, when the file denoted by the specified URI cannot be loaded), browsers handle it as they would a none value.

Note: Even if the images are opaque and the color won’t be displayed in normal circumstances, web developers should always specify a background-color . If the images cannot be loaded—for instance, when the network is down—the background color will be used as a fallback.

Syntax

background-image: linear-gradient( to bottom, rgba(255, 255, 0, 0.5), rgba(0, 0, 255, 0.5) ), url("catfront.png"); /* Global values */ background-image: inherit; background-image: initial; background-image: revert; background-image: revert-layer; background-image: unset; 

Each background image is specified either as the keyword none or as an value.

To specify multiple background images, supply multiple values, separated by a comma.

Values

Is a keyword denoting the absence of images.

Accessibility concerns

Browsers do not provide any special information on background images to assistive technology. This is important primarily for screen readers, as a screen reader will not announce its presence and therefore convey nothing to its users. If the image contains information critical to understanding the page’s overall purpose, it is better to describe it semantically in the document.

Formal definition

Initial value	none
Applies to	all elements. It also applies to ::first-letter and ::first-line .
Inherited	no
Computed value	as specified, but with url() values made absolute
Animation type	discrete

Formal syntax

Examples

Layering background images

Note that the star image is partially transparent and is layered over the cat image.

HTML

div> p class="catsandstars">This paragraph is full of catsbr />and stars.p> p>This paragraph is not.p> p class="catsandstars">Here are more cats for you.br />Look at them!p> p>And no more.p> div> 

CSS

p  font-size: 1.5em; color: #fe7f88; background-image: none; background-color: transparent; > div  background-image: url("mdn_logo_only_color.png"); > .catsandstars  background-image: url("startransparent.gif"), url("catfront.png"); background-color: transparent; > 

Result

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• Implementing image sprites in CSS
• Image-related data types: ,
• Image-related functions:
  • cross-fade()
  • element()
  • image()
  • image-set()
  • linear-gradient()
  • radial-gradient()
  • conic-gradient()
  • repeating-linear-gradient()
  • repeating-radial-gradient()
  • repeating-conic-gradient()
  • paint()
  • url()

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  Источник

  CSS background-image Property

  The background-image property sets one or more background images for an element.

  By default, a background-image is placed at the top-left corner of an element, and repeated both vertically and horizontally.

  Tip: The background of an element is the total size of the element, including padding and border (but not the margin).

  Tip: Always set a background-color to be used if the image is unavailable.

  Default value:	none
  Inherited:	no
  Animatable:	no. Read about animatable
  Version:	CSS1 + new values in CSS3
  JavaScript syntax:	object.style.backgroundImage=»url(img_tree.gif)» Try it

  Browser Support

  The numbers in the table specify the first browser version that fully supports the property.

  CSS Syntax

  Property Values

  Value	Description	Demo
  url(‘URL‘)	The URL to the image. To specify more than one image, separate the URLs with a comma	Demo ❯
  none	No background image will be displayed. This is default
  conic-gradient()	Sets a conic gradient as the background image. Define at least two colors	Demo ❯
  linear-gradient()	Sets a linear gradient as the background image. Define at least two colors (top to bottom)	Demo ❯
  radial-gradient()	Sets a radial gradient as the background image. Define at least two colors (center to edges)	Demo ❯
  repeating-conic-gradient()	Repeats a conic gradient	Demo ❯
  repeating-linear-gradient()	Repeats a linear gradient	Demo ❯
  repeating-radial-gradient()	Repeats a radial gradient	Demo ❯
  initial	Sets this property to its default value. Read about initial
  inherit	Inherits this property from its parent element. Read about inherit

  More Examples

  Example

  Sets two background images for the element. Let the first image appear only once (with no-repeat), and let the second image be repeated:

  body <
  background-image: url(«img_tree.gif»), url(«paper.gif»);
  background-repeat: no-repeat, repeat;
  background-color: #cccccc;
  >
  

  Example

  Use different background properties to create a «hero» image:

  .hero-image <
  background-image: url(«photographer.jpg»); /* The image used */
  background-color: #cccccc; /* Used if the image is unavailable */
  height: 500px; /* You must set a specified height */
  background-position: center; /* Center the image */
  background-repeat: no-repeat; /* Do not repeat the image */
  background-size: cover; /* Resize the background image to cover the entire container */
  >
  

  Example

  Sets a linear-gradient (two colors) as a background image for a element:

  Example

  Sets a linear-gradient (three colors) as a background image for a element:

  #grad1 <
  height: 200px;
  background-color: #cccccc;
  background-image: linear-gradient(red, yellow, green);
  >
  

  Example

  The repeating-linear-gradient() function is used to repeat linear gradients:

  #grad1 <
  height: 200px;
  background-color: #cccccc;
  background-image: repeating-linear-gradient(red, yellow 10%, green 20%);
  >
  

  Example

  Sets a radial-gradient (two colors) as a background image for a element:

  Example

  Sets a radial-gradient (three colors) as a background image for a element:

  #grad1 <
  height: 200px;
  background-color: #cccccc;
  background-image: radial-gradient(red, yellow, green);
  >
  

  Example

  The repeating-radial-gradient() function is used to repeat radial gradients:

  #grad1 <
  height: 200px;
  background-color: #cccccc;
  background-image: repeating-radial-gradient(red, yellow 10%, green 20%);
  >
  

  Источник