How to show a notification bar on Top after n seconds with transition from top to down?

Tags: javascript,jquery,css

Problem :

In lot of mobile sites, I see notification appear with animation from top to down after some seconds. Currently, I don't remember the sites. I was able to find how to show top notification, but unable to find how to animate this using CSS 3 transition or javscript/jquery. Here is the link which I found,

Solution :

This is how I solve the issue,

<div class="notify-bar notify-bar-height" style="display: none">
            Intall ABC!
            setTimeout(function () {

        background-size: 40px 40px;
        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);                                      
         box-shadow: inset 0 -1px 0 rgba(255,255,255,.4);
         width: 100%;
         border: 1px solid;
         color: #fff;
         text-shadow: 0 1px 0 rgba(0,0,0,.5);
         background-color: #4ea5cd;
         border-color: #3b8eb5;
         padding: 5px;

.notify-bar-height {
    height: 0;
    -webkit-transition: height 0.5s ease;
    -moz-transition: height 0.5s ease;
    -o-transition: height 0.5s ease;
    -ms-transition: height 0.5s ease;
    transition: height 0.5s ease;
.notify-bar-height-change {
    height: 20px;

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