.preload {
    display: block; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: #cfd8dc; /* Fallback color */
    text-align: center;
    z-index: 200000000; /* The z-index (defaults to 200000000)*/
}

.preload > p {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    margin-top: 150px;
    font-weight: 700;
    font-size: 20px;
    font-family: "Trebuchet MS", Helvetica, sans-serif !important;
    color: #616161;
}