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CSS3 Interview Questions

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CSS3 is upgreaded version of CSS with new future like Selectors,Box Model, Backgrounds and Borders, Text Effects,2D/3D Transformations, Animations, Multiple Column Layout,User Interface etc.. 

Below are the listed major modules

  • Selectors
  • Box Model
  • Backgrounds and Borders
  • Text Effects
  • 2D/3D Transformations
  • Animations
  • Multiple Column Layout
  • User Interface

Following border futures added

  • border-radius
  • box-shadow
  • border-image

and all modern Browser Support it like below

Internet Explorer 9 supports border-radius and box-shadow

Firefox requires the prefix -moz- for border-image.

Chrome and Safari requires the prefix -webkit- for border-image.

Opera requires the prefix -o- for border-image. 

We have to creat a class like below

<style>
.roundc{
border:2px solid #ff0000;
border-radius:25px;
background:#dddddd;
width:300px;
-moz-border-radius:25px; /* Firefox */
-webkit-border-radius:25px; /* Chrome and Safari */
-o-border-radius:25px; /* Opera */
}
</style>

and we have to add this class where we want the round corner like in below div

<div class="roundc" > this is the round corner by css3 </div> 

By using border-image: property of css3 we can create a border using images like below

.roundpcds
{
border-image:url(borderpcds.png) 30 30 round;
-moz-border-image:url(borderpcds.png) 30 30 round; /* Firefox */
-webkit-border-image:url(borderpcds.png) 30 30 round; /* Safari and Chrome */
-o-border-image:url(borderpcds.png) 30 30 round; /* Opera */
}
.stretchPcds
{
-moz-border-image:url(borderpcds.png) 30 30 stretch; /* Firefox */
-webkit-border-image:url(borderpcds.png) 30 30 stretch; /* Safari and Chrome */
-o-border-image:url(borderpcds.png) 30 30 stretch; /* Opera */
border-image:url(borderpcds.png) 30 30 stretch;
} 

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