#preloader {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background-color: #fff;
                /* change if the mask should have another color then white */
                z-index: 99;
                /* makes sure it stays on top */
            }

            #status {
                width: 200px;
                height: 200px;
                position: absolute;
                left: 50%;
                /* centers the loading animation horizontally one the screen */
                top: 50%;
                /* centers the loading animation vertically one the screen */
                background-image: url(../images/status.gif);
                /* path to your loading animation */
                background-repeat: no-repeat;
                background-position: center;
                margin: -100px 0 0 -100px;
                /* is width and height divided by two */
            }