CSS3 Transition

With css3, we can add effect when an element changing style such as when width, height etc.
To do this we need to do the following things:
a. Specify the CSS property we want to add effect.
b. Specify the duration of the effect.
Suppose we have a div with class “test”. So we can add transition effect with the following CSS style

 	div.test
        {
            width: 40px;
            height: 40px;
            background-color: #000000;
            transition: width 1s, height 1s, transform 1s, background-color 3s;
            -moz-transition: width 1s, height 1s, -moz-transform 1s; /* Firefox 4 */
            -webkit-transition: width 1s, height 1s, -webkit-transform 1s, background-color 1s; /* Safari and Chrome */
            -o-transition: width 1s, height 1s, -o-transform 1s; /* Opera */
            text-align: center;
            font-weight: bold;
            line-height: 40px;
        }
        
        div.test:hover
        {
            width: 80px;
            height: 80px;
            transform: rotate(180deg);
            -moz-transform: rotate(180deg); /* Firefox 4 */
            -webkit-transform: rotate(360deg); /* Safari and Chrome */
            -o-transform: rotate(180deg); /* Opera */
            font-size: 25px;
            color: White;
            line-height: 80px;
            background-color: #DD1188;
            cursor: pointer;
        }

And the test div in our document

<div class="test">
</div>

Here width, height, transform, background-color will be changed gradually in 1second with a nice effect on mouse over.
Look at the property
transition: width 1s, height 1s, transform 1s, background-color 3s;
Here we set the time duration for the property change.
Note: Internate Explorer not yet support transition.