CSS background property

CSS background property :

§ This property is used to define the background effects on Html element. There are 5 CSS background properties that affect the Html elements.

· background-color

· background-image

· background-repeat

· background-attachment

· background-position

CSS background-color

§ It is used to set the background color for an html element.

§ values for background-color property can be provide as

color_name |hex color value |rgb(0-255,0-255,0-255)

|rgba(0-255,0-255,0-255,0-1)|transparent

CSS Syntax

background-color: color|transparent|initial|inherit;

Value	Description
color	Specifies the name of color
transparent	Specifies that the background color should be transparent.
inherit	Inherits this property from its parent element.

Example:-

<html>
<head>
<style>
h3{
    background-color:yellow;
}
p{
    background-color:cyan;
}
div{
    background-color: bisque;
}
</style>
</head>
<body>
    <div>
        This is a div Element
    </div>
    <p>This is paragraph</p>
    <h3>This is h3 Heading</h3>
</body>
</html>

Output:

Specify The background Color with different types values:-

§ Let’s see here what different way to provide a color value.

§ Specify the background color with a HEX value.

background-color: #2060d6;

§ Specify the background color with an RGB value:

§ What is RGB-

§ The RGB color model is an additive color model in which red, green, and blue light are added together in various ways to reproduce a broad array of colors.

background-color: rgb(red, green, blue);

background-color: rgb(209, 25, 25);

§ Specify the background color with an RGBA value:

§ What is RGBA-

§ RGBA color values are an extension of RGB color values with an alpha channel - which specifies the opacity for a color.

background-color: rgba(13, 212, 40, 0.3);

§ Specify the background color with a HSL value:

§ What is HSL-

§ HSL color values are specified with: hsl(hue, saturation, lightness) . Hue. Hue is a degree on the color wheel from 0 to 360. 0 is red, 120 is green, 240 is blue.

background-color: hsl(352, 43%, 51%);

§ Specify the background color with a HSLA value:

§ What is HSLA-

§ HSLA stands for Hue, Saturation, Lightness, and alpha. This HSLa Color Values method is much more intuitive than RGBA or Hex values.

background-color: hsla(hue, saturation, lightness, alpha)

§ background-color: hsla(165, 43%, 51%, 0.3);

Setting the different background Color with different types values:-

<html>
<head>
<style>
#div1{
     /* Specify the background color with a HEX value:*/
     background-color: #b6d192;
}
#div2{
    /* Specify the background color with an RGB value:*/
    background-color:rgb(201, 76, 118);
}
#div3{
    /* Specify the background color with an RGBA value:*/
    background-color: rgba(201, 76, 93, 0.3);
}
#div4{
    /* Specify the background color with a HSL value::*/
    background-color: hsl(162, 43%, 51%);
}
#div5{
    /* Specify the background color with a HSL value::*/
    background-color: hsla(89, 90%, 49%, 0.3);
}
</style>
</head>
<body>
   <div id="div1">
    This is DIV-1
   </div>
   <div id="div2">
        This is DIV-2
    </div>
    <div id="div3">
        This is DIV-3
    </div>
    <div id="div4">
         This is DIV-4
    </div>
    <div id="div5">
        This is DIV-5
    </div>
</body>
</html>

Output:

Example:-

§ Set the background color for a page:

<html>
<head>
<style>
body{
    background-color: aquamarine;
}
</style>
</head>
<body>
</body>
</html>

Output:-

CSS background-image Property

§ It is used to set the image in background of the Html element..

CSS Syntax

background-image: url|none|initial|inherit;

values:url('image-path')|none

§ Values that we can assign none or we can assign a URL function having a image path or image name URL stands for uniform resource locator.

Example

§ Setting a background-image for the <body> element:

§ Here we have one HTML_CODE folder with-in this folder we have images folder and images folder contains images.

Example:-

<html>

    <head>
        <style>
            /* specifies the background image*/
            body{
                background-image: url('images/india.jpg')
            }
        </style>
    </head>
    <body>
    </body>
</html>

Output:-

§So watch the output here background image repeated. If image size is less than browser size then by default, the background-image property repeats the background image horizontally and vertically.

CSS background-repeat Property

§ It is used to specify, how the background image to be repeated.

§ By default, the background-image property repeats the background image horizontally and vertically.

§ If you do not want to repeat background image then set no-repeat.

CSS Syntax

background-repeat: repeat|repeat-x|repeat-y|no-

repeat|initial|inherit;

Example: repeat in x-axis

<html>
    <head>
        <style>
            /* specifies the background image*/
            body{
                background-image:url('images/india.jpg'); 
                background-repeat: repeat-x;  
            }
        </style>
    </head>
    <body>
    </body>
</html>

Output:-

Example: repeat in y-axis

<html>
    <head>
        <style>
            /* specifies the background image*/
            body{
                background-image:url('images/india.jpg'); 
                background-repeat: repeat-y;  
            }
        </style>
    </head>
    <body>
    </body>
</html>

Output:-

Example: no-repeat

<html>
    <head>
        <style>
            /* specifies the background image*/
            body{
                background-image:url('images/india.jpg'); 
                background-repeat: no-repeat;  
            }
        </style>
    </head>
    <body>

    </body>
</html>

Output:-

CSS background- attachment

§ It is used to specify, how the background image is to be attached to the wall of a web page.

§ By using this property we can Defines how the background image will behave when scrolling the page.

Syntax:- background-attachment: scroll | fixed | inherit

background-attachment: fixed;

§ The background image will not scroll with the page or against the containing block.

background-attachment: scroll;

§ The background image will scroll with the page or against the containing block.

Example

<html>
    <head>
        <style>
            /* specifies the background image*/
            body{
                background-color: aliceblue;
                background-image:url('images/flower.jpg'); 
                
            }
            p{
                font-weight: bold;
            }
            
        </style>
    </head>
    <body>
         <p> this is Paragraph-1</p>
         <br/><br/><br/><br/><br/><br/><br/><br/><br/>
        <p> this is Paragraph-2</p>
         <br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
         <p> this is Paragraph-3</p>
         <br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
         <p> this is Paragraph-4</p>
         <br/><br/><br/><br/><br/><br/><br/><br/><br/>
         <p> this is Paragraph-5</p>
         <br/><br/><br/><br/><br/><br/><br/><br/><br/>
    </body>
</html>

§ Here you can observe the behavior of the image when I start scrolling with the text image also gets scroll can see that images also moving up with the text and also you can observe the image is getting repeated right image is getting repeated but i move the text down the image is also moving down so images scrolling with the text as a default behavior I can stop that I can fix the image first thing what I do if I stop this repeating behavior of the image by applying background-repeat:no-repeat.

body{
      background-image:url('images/flower.jpg'); 
      background-repeat: no-repeat;          
    }

§ Save the file and refresh the browser in this time the text is moving up and scrolling images also moving up and scrolling but the images is not getting repeated .you can see with the text images scrolling but it is not repeating so we stop the repeating behavior so now stopping the scrolling behavior how do I do that by using the background-attachment property.

body{
      background-image:url('images/flower.jpg'); 
      background-repeat: no-repeat;
      background-attachment: fixed;          
    }

§ Save your browser and refresh this time the background image is going to be fixed to the wall of a page only the text is going to be scrolled you can see that only text is moving up and down only text is getting scrolled not the background image the background images fixed at the most of the time we fix the background image sometimes we might need the background image also to be scrolled then we can sign here value scroll.

            body{
                background-image:url('images/flower.jpg'); 
                background-repeat: no-repeat;
                background-attachment: scroll;
            }

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