Hello guys, this time i wanted to create 3 simple CSS3 Loading Animations. I remember that CSS3 Loading Animations are only visible in Firefox, Safari and Chrome. What do you wait, start reading!

First Example CSS3 Loading Animation

HTML

In this first example, the markup is very simple, where we will create an unordered list and we will create inside the div to create the effect and to control the total animation.

<ul id="progress">
    <li>
    <div id="layer1" class="ball"></div> <!-- layer1 control delay animation / ball is effect -->
    <div id="layer7" class="pulse"></div> <!-- layer7 control delay animation / pulse is effect  -->
    </li>
    <li>
    <div id="layer2" class="ball"></div>
    <div id="layer8" class="pulse"></div>
    </li>
    <li>
    <div id="layer3" class="ball"></div>
    <div id="layer9" class="pulse"></div>
    </li>
    <li>
    <div id="layer4" class="ball"></div>
    <div id="layer10" class="pulse"></div>
    </li>
    <li>
    <div id="layer5" class="ball"></div>
    <div id="layer11" class="pulse"></div>
    </li>
</ul>

CSS

Nothing difficult, just create the graphics for the unordered list, take special care to animation, thanks to the delay and control layers we can create this effects!

ul#progress {
    list-style: none;
    width: 125px;
    margin: 0 auto;
    padding-top: 50px;
    padding-bottom: 50px;
}

ul#progress li {
    /* Style your list */
	float: left;
    position: relative;
    width: 15px;
    height: 15px;
    border: 1px solid #fff;
    border-radius: 50px;
    margin-left: 10px;
    border-left: 1px solid #111;
    border-top: 1px solid #111;
    border-right: 1px solid #333;
    border-bottom: 1px solid #333;
    background: #000;
}

ul#progress li:first-child {
    margin-left: 0;
} /* Remove the margin first li element */

.ball {
    /* Style your ball and set the animation */
	background-color: #2187e7;
    background-image: -moz-linear-gradient(90deg, #2187e7 25%, #a0eaff);
    background-image: -webkit-linear-gradient(90deg, #2187e7 25%, #a0eaff);
    width: 15px;
    height: 15px;
    border-radius: 50px;
    -moz-transform: scale(0);
    -webkit-transform: scale(0);
    -moz-animation: loading 1s linear forwards;
    -webkit-animation: loading 1s linear forwards;
}

.pulse {
    /* Style your second ball to create the amazing effects */
	width: 15px;
    height: 15px;
    border-radius: 30px;
    border: 1px solid #00c6ff;
    box-shadow: 0 0 5px #00c6ff;
    position: absolute;
    top: -1px;
    left: -1px;
    -moz-transform: scale(0);
    -webkit-transform: scale(0);
    -webkit-animation: pulse 1s ease-out;
    -moz-animation: pulse 1s ease-out;
}

/* Control Layers */
#layer1 {
    -moz-animation-delay: 0.5s;
    -webkit-animation-delay: 0.5s;
}

#layer2 {
    -moz-animation-delay: 1s;
    -webkit-animation-delay: 1s;
}

#layer3 {
    -moz-animation-delay: 1.5s;
    -webkit-animation-delay: 1.5s;
}

#layer4 {
    -moz-animation-delay: 2s;
    -webkit-animation-delay: 2s;
}

#layer5 {
    -moz-animation-delay: 2.5s;
    -webkit-animation-delay: 2.5s;
}

#layer7 {
    -moz-animation-delay: 1.5s;
    -webkit-animation-delay: 1.5s;
}

#layer8 {
    -moz-animation-delay: 2s;
    -webkit-animation-delay: 2s;
}

#layer9 {
    -moz-animation-delay: 2.5s;
    -webkit-animation-delay: 2.5s;
}

#layer10 {
    -moz-animation-delay: 3s;
    -webkit-animation-delay: 3s;
}

#layer11 {
    -moz-animation-delay: 3.5s;
    -webkit-animation-delay: 3.5s;
}

@-moz-keyframes loading {
    0% {
        -moz-transform: scale(0,0);
    }

    100% {
        -moz-transform: scale(1,1);
    };
}

@-webkit-keyframes loading {
    0% {
        -webkit-transform: scale(0,0);
    }

    100% {
        -webkit-transform: scale(1,1);
    };
}

@-moz-keyframes pulse {
    0% {
        -moz-transform: scale(0);
        opacity: 0;
    }

    10% {
        -moz-transform: scale(1);
        opacity: 0.5;
    }

    50% {
        -moz-transform: scale(1.75);
        opacity: 0;
    }

    100% {
        -moz-transform: scale(0);
        opacity: 0;
    };
}

@-webkit-keyframes pulse {
    0% {
        -webkit-transform: scale(0);
        opacity: 0;
    }

    10% {
        -webkit-transform: scale(1);
        opacity: 0.5;
    }

    50% {
        -webkit-transform: scale(1.75);
        opacity: 0;
    }

    100% {
        -webkit-transform: scale(0);
        opacity: 0;
    };
}

Second Example CSS3 Loading Animation

HTML

In this second example, we will see how to create a loading bar that fits any resolution. Just create a container that has a width of 100% and put inside a class via the animation will run the entire width of the screen.

<div id="content">
<span class="expand"></span>
</div>

CSS

It looks like the style, much simpler than the previous, this is the basic setting, you can modify at your convenience.

#content {
    width: 100%;
    /* Full Width */
	height: 5px;
    margin: 50px auto;
    background: #000;
}

.expand {
    width: 100%;
    height: 1px;
    margin: 2px 0;
    background: #2187e7;
    position: absolute;
    box-shadow: 0px 0px 10px 1px rgba(0,198,255,0.7);
    -moz-animation: fullexpand 10s ease-out;
    -webkit-animation: fullexpand 10s ease-out;
}

/* Full Width Animation Bar */
@-moz-keyframes fullexpand {
    0%  { width: 0px;
}

100% {
    width: 100%;
}	
}

@-webkit-keyframes fullexpand {
    0% {
        width: 0px;
    }

    100% {
        width: 100%;
    };
}

Third Example CSS3 Loading Animation

HTML

In this last example, recreate a simple loading bar with the opacity parameter, there will always control layer to control the exact timing of animation.

<ul id="loadbar">
    <li>
    <div id="layerFill1" class="bar"></div> <!-- Control Layer + Bar  -->
    </li>
    <li>
    <div id="layerFill2" class="bar"></div>
    </li>
    <li>
    <div id="layerFill3" class="bar"></div>
    </li>
    <li>
    <div id="layerFill4" class="bar"></div>
    </li>
    <li>
    <div id="layerFill5" class="bar"></div>
    </li>
    <li>
    <div id="layerFill6" class="bar"></div>
    </li>
    <li>
    <div id="layerFill7" class="bar"></div>
    </li>
    <li>
    <div id="layerFill8" class="bar"></div>
    </li>
    <li>
    <div id="layerFill9" class="bar"></div>
    </li>
    <li>
    <div id="layerFill10" class="bar"></div>
    </li>
</ul>

CSS

As you can see the process is the same as the first example, you just know a little CSS to create wonderful effects.

ul#loadbar {
    list-style: none;
    width: 140px;
    margin: 0 auto;
    padding-top: 50px;
    padding-bottom: 75px;
}

ul#loadbar li {
    float: left;
    position: relative;
    width: 11px;
    height: 26px;
    margin-left: 1px;
    border-left: 1px solid #111;
    border-top: 1px solid #111;
    border-right: 1px solid #333;
    border-bottom: 1px solid #333;
    background: #000;
}

ul#loadbar li:first-child {
    margin-left: 0;
}

.bar {
    background-color: #2187e7;
    background-image: -moz-linear-gradient(45deg, #2187e7 25%, #a0eaff);
    background-image: -webkit-linear-gradient(45deg, #2187e7 25%, #a0eaff);
    width: 11px;
    height: 26px;
    opacity: 0;
    -webkit-animation: fill .5s linear forwards;
    -moz-animation: fill .5s linear forwards;
}

#layerFill1 {
    -moz-animation-delay: 0.5s;
    -webkit-animation-delay: 0.5s;
}

#layerFill2 {
    -moz-animation-delay: 1s;
    -webkit-animation-delay: 1s;
}

#layerFill3 {
    -moz-animation-delay: 1.5s;
    -webkit-animation-delay: 1.5s;
}

#layerFill4 {
    -moz-animation-delay: 2s;
    -webkit-animation-delay: 2s;
}

#layerFill5 {
    -moz-animation-delay: 2.5s;
    -webkit-animation-delay: 2.5s;
}

#layerFill6 {
    -moz-animation-delay: 3s;
    -webkit-animation-delay: 3s;
}

#layerFill7 {
    -moz-animation-delay: 3.5s;
    -webkit-animation-delay: 3.5s;
}

#layerFill8 {
    -moz-animation-delay: 4s;
    -webkit-animation-delay: 4s;
}

#layerFill9 {
    -moz-animation-delay: 4.5s;
    -webkit-animation-delay: 4.5s;
}

#layerFill10 {
    -moz-animation-delay: 5s;
    -webkit-animation-delay: 5s;
}

@-moz-keyframes fill {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    };
}

@-webkit-keyframes fill {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    };
}

Conclusion

In this tutorial we created the simple but beautiful animations using only CSS3, for further information I recommend reading this reference CSS3 Animations.