CSS Text box code:

.blur   {
    filter: blur(5px);
    -webkit-filter: blur(5px);
    -moz-filter: blur(5px);
    -o-filter: blur(5px);
    -ms-filter: blur(5px);

}
#overlay    {
    position: fixed;
    display: none;
    left: 0px;
    top: 0px;
    right: 0px;
    bottom: 0px;
    background: rgba(255,255,255,.8);
    z-index: 999;
}
#popup {
    position: absolute;
    width: 400px;
    height: 200px;
    background: rgb(255,255,255);
    border: 5px solid rgb(90,90,90);
    left: 0px;
    right: 0px;
    top: 0px;
    bottom: 0px;
    margin: auto;
}