Notification messages are an important part of the user experience and you can’t afford to omit them. A notification alert message should appear every time the user perform important tasks.

The HTML

<div class="info message">
                 <h3>FYI, something just happened!</h3>
                 <p>This is just an info notification message.</p>
</div>

<div class="error message">
                 <h3>Ups, an error ocurred</h3>
                 <p>This is just an error notification message.</p>
</div>

<div class="warning message">
                 <h3>Wait, I must warn you!</h3>
                 <p>This is just a warning notification message.</p>
</div>

<div class="success message">
                 <h3>Congrats, you did it!</h3>
                 <p>This is just a success notification message.</p>
</div>

The CSS

.message
{
                -webkit-background-size: 40px 40px;
                -moz-background-size: 40px 40px;
                background-size: 40px 40px;
                background-image: -webkit-gradient(linear, left top, right bottom,
                                                        color-stop(.25, rgba(255, 255, 255, .05)), color-stop(.25, transparent),
                                                        color-stop(.5, transparent), color-stop(.5, rgba(255, 255, 255, .05)),
                                                        color-stop(.75, rgba(255, 255, 255, .05)), color-stop(.75, transparent),
                                                        to(transparent));
                background-image: -webkit-linear-gradient(135deg, rgba(255, 255, 255, .05) 25%, transparent 25%,
                                                        transparent 50%, rgba(255, 255, 255, .05) 50%, rgba(255, 255, 255, .05) 75%,
                                                        transparent 75%, transparent);
                background-image: -moz-linear-gradient(135deg, rgba(255, 255, 255, .05) 25%, transparent 25%,
                                                        transparent 50%, rgba(255, 255, 255, .05) 50%, rgba(255, 255, 255, .05) 75%,
                                                        transparent 75%, transparent);
                background-image: -ms-linear-gradient(135deg, rgba(255, 255, 255, .05) 25%, transparent 25%,
                                                        transparent 50%, rgba(255, 255, 255, .05) 50%, rgba(255, 255, 255, .05) 75%,
                                                        transparent 75%, transparent);
                background-image: -o-linear-gradient(135deg, rgba(255, 255, 255, .05) 25%, transparent 25%,
                                                        transparent 50%, rgba(255, 255, 255, .05) 50%, rgba(255, 255, 255, .05) 75%,
                                                        transparent 75%, transparent);
                background-image: linear-gradient(135deg, rgba(255, 255, 255, .05) 25%, transparent 25%,
                                                        transparent 50%, rgba(255, 255, 255, .05) 50%, rgba(255, 255, 255, .05) 75%,
                                                        transparent 75%, transparent);
                 -moz-box-shadow: inset 0 -1px 0 rgba(255,255,255,.4);
                 -webkit-box-shadow: inset 0 -1px 0 rgba(255,255,255,.4);
                 box-shadow: inset 0 -1px 0 rgba(255,255,255,.4);
                 width: 100%;
                 border: 1px solid;
                 color: #fff;
                 padding: 15px;
                 position: fixed;
                 _position: absolute;
                 text-shadow: 0 1px 0 rgba(0,0,0,.5);
                 -webkit-animation: animate-bg 5s linear infinite;
                 -moz-animation: animate-bg 5s linear infinite;
}

.info
{
                 background-color: #4ea5cd;
                 border-color: #3b8eb5;
}

.error
{
                 background-color: #de4343;
                 border-color: #c43d3d;
}

.warning
{
                 background-color: #eaaf51;
                 border-color: #d99a36;
}

.success
{
                 background-color: #61b832;
                 border-color: #55a12c;
}

.message h3
{
                 margin: 0 0 5px 0;
}

.message p
{
                 margin: 0;
}

@-webkit-keyframes animate-bg
{
    from {
        background-position: 0 0;
    }
    to {
       background-position: -80px 0;
    }
}

@-moz-keyframes animate-bg
{
    from {
        background-position: 0 0;
    }
    to {
       background-position: -80px 0;
    }
}

Note the animate-bg, which animate the background diagonal stripes. Of course, to see this effect, you should use latest Webkit browsers like Chrome/Safari or Mozilla 5+.

The notification messages will be hidden initially. For that we’ll use fixed positioning (absolute value just for IE6 – as there is no position:fixed support).

    position: fixed;
     _position: absolute; /* IE6 only */

The jQuery

Define the messages types using an array:

var myMessages = ['info','warning','error','success'];

The below function hides the notification messages. Messages could have dynamic heights and for that, each message’s height is calculated in order to hide it properly.

function hideAllMessages()
{
                 var messagesHeights = new Array(); // this array will store height for each

                 for (i=0; i<myMessages.length; i++)
                 {
                                  messagesHeights[i] = $('.' + myMessages[i]).outerHeight(); // fill array
                                  $('.' + myMessages[i]).css('top', -messagesHeights[i]); //move element outside viewport
                 }
}

The showMessage function is called when document ready.

function showMessage(type)
{
        $('.'+ type +'-trigger').click(function(){
                  hideAllMessages();
                  $('.'+type).animate({top:"0"}, 500);
        });
}

On page load, first of all we’ll hide all the messages: hideAllMessages(). Then, for each trigger, show the equivalent message:

$(document).ready(function(){

                 // Initially, hide them all
                 hideAllMessages();

                 // Show message
                 for(var i=0;i<myMessages.length;i++)
                 {
                        showMessage(myMessages[i]);
                 }

                 // When message is clicked, hide it
                 $('.message').click(function(){
                                  $(this).animate({top: -$(this).outerHeight()}, 500);
                  });            

});

The artilce source:http://www.red-team-design.com/cool-notification-messages-with-css3-jquery