Progressive blur

by adamh

HTML

<div class="container">
    <img src="http://media.audleytravel.com/-/media/Images/Home/Letterbox/2012letterbox2.ashx" />
    <div class="blur blur-50"></div>
    <div class="blur blur-40"></div>
    <div class="blur blur-30"></div>
    <div class="blur blur-20"></div>
    <div class="content">Content</div>
</div>

CSS

.container {
    width: 700px;
    height: 400px;
    position: relative;
    overflow: hidden;
}

.blur {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    background: transparent url("http://media.audleytravel.com/-/media/Images/Home/Letterbox/2012letterbox2.ashx;") top left;
}

.blur-50 {
    z-index: 20;
    -webkit-filter: blur(1px);
    width: 50%;
}
.blur-40 {
    z-index: 30;
    -webkit-filter: blur(2px);
    width: 40%;
}
.blur-30 {
    z-index: 40;
    -webkit-filter: blur(3px);
    width: 30%;
}
.blur-20 {
    z-index: 50;
    -webkit-filter: blur(4px);
    width: 20%;
}

.content {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 20%;
    z-index: 100;
}