CSS: How to Create Multiple Borders in CSS3

box-shadow:
    0 0 0 2px #000,
    0 0 0 3px #999,
    0 0 0 9px #fa0,
    0 0 0 10px #666,
    0 0 0 16px #fd0,
    0 0 0 18px #000;

Thank our lucky stars, we CAN override inline styles directly from the stylesheet. Take this example markup:

<div style="background: red;">
    The inline styles for this div should make it red.
</div>

We can fight that with this:

div[style] {
   background: yellow !important;
}

div.block-banners img {
    opacity: 0.9;
    filter:alpha(opacity=90);/******* This line for IE ********/
}
div.block-banners img:hover {
    opacity: 1;
    filter:alpha(opacity=100);/******* This line for IE ********/
}

Definition and Usage
The frameborder attribute specifies whether or not to display a border around an iframe.
Browser Support
The frameborder attribute is supported in all major browsers.
Syntax

<iframe frameborder="value">

Attribute Values
1 Border on (this is default)
0 Border off
Example
An iframe with no border:

<iframe src="/default.asp" width="200" height="200" frameborder="0">
<p>Your browser does not support iframes.</p>
</iframe>

Here is a way to make some CSS rules visible only for Opera (9.5 +)?

@media all and (-webkit-min-device-pixel-ratio:10000), not all and (-webkit-min-device-pixel-ratio:0) {
       css rules
 }

here is an example:

@media all and (-webkit-min-device-pixel-ratio:10000), not all and (-webkit-min-device-pixel-ratio:0) {
    #ja-main {
        width: 800px ;
    }
    #ja-left {
        width: 200px;
    }
}

For google chrome
@media screen and (-webkit-min-device-pixel-ratio:0) {

Body {}

}

CSS3 Generator v1.7
http://css3generator.com/

This site help you to generate CSS3 code such as :
Border Radius
Box Shadow
Text Shadow
RGBA
@Font Face
Multiple Columns
Box Resize
Box Sizing
Outline
Transitions
Transform
Selectors
Gradients

We wrote a script to “equalize” the heights of boxes within the same container and create a tidy grid — with little overhead.

Creating the visual effect of equal-height columns or content boxes has been a challenge ever since we abandoned table-based layouts. When developing complex web applications or site designs we’ve found that it often makes the most sense from a usability and performance standpoint to use a simple JavaScript workaround: our equalHeights() function determines the heights of all sibling elements in a container, and then sets each element’s minimum height to that of the tallest element. When JavaScript is disabled, the boxes or columns appear with varying heights, but the content remains legible and the page is still completely usable.

You can use this trick to flip an image horizontal also it works on IE. Just add the following CSS class to your image.

Note: It works with source images only (not background image)

.flip-horizontal {
    -moz-transform: scaleX(-1);
    -webkit-transform: scaleX(-1);
    transform: scaleX(-1);
    filter: fliph; /*IE*/
}

Demo:
before:

After:

You can make an image rotate using CSS as follow:

  <style type="text/css">
    #nice a:hover img {
    -moz-transform: rotate(-3deg);
   }
  </style>
<center id="nice">
<a href="http://google.com"><img src="http://phpmysqltalk.com/wp-content/uploads/2010/06/tom-and-jerry1.jpg" alt="" title="tom-and-jerry1" width="379" height="285" class="aligncenter size-full wp-image-128" /></a>
</center>