How to show progress bar until the page completely loads in HTML5/CSS3?

I want a Flash website for loading my html5/css3 webpage.

The page should only appear when it is completely rendered. Before it is displayed, a loading bar must appear.

How should I do that? Do I need something else apart from HTML5 and CSS3?

Please provide me with the tutorial.

Answer

Put a div at the beginning of your page (well this is a spinner and not a loading bar… but…)

    <div id="work-in-progress">
        <div class="work-spinner"></div>
    </div>

then using JQuery bind to the load event… which gets fired when the page is loaded

  $(window).bind("load", function () {
        $('#work-in-progress').fadeOut(100);
    });

and add some css to the div to

#work-in-progress {
  position: fixed;
  width: 100%;
  height: 100%;
  font-size: 150px;
  text-align: center;
  vertical-align: middle;
  color: #000000;
  z-index: 200000;
  background-color: #FFFFFF;
}

.work-spinner {
  background-color: rgba(0,0,0,0);
  border: 9px solid rgba(27,61,226,0.9);
  opacity: .9;
  border-left: 5px solid rgba(0,0,0,0);
  border-radius: 120px;
  -webkit-box-shadow: 0 0 35px #1B3DE2;
  box-shadow: 0 0 35px #1B3DE2;
  width: 100px;
  height: 100px;
  margin: 0 auto;
  -moz-animation: spin .5s infinite linear;
  -webkit-animation: spin .5s infinite linear;
  -o-animation: spin .5s infinite linear;
  animation: spin .5s infinite linear;
}

@-moz-keyframes spin {
 from {
     -moz-transform: rotate(0deg);
 }
 to {
     -moz-transform: rotate(360deg);
 }
}

@-webkit-keyframes spin {
 from {
     -webkit-transform: rotate(0deg);
 }
 to {
     -webkit-transform: rotate(360deg);
 }
}

@keyframes spin {
 from {
     transform: rotate(0deg);
 }
 to {
     transform: rotate(360deg);
 }
}
@-o-keyframes spin {
 from {
     transform: rotate(0deg);
 }
 to {
     transform: rotate(360deg);
 }
}