.fileUploadProgress {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    text-align: center;
}

​ .fileUploadProgress span {
    background-color: #FAFAFA;
    padding: 20px;
    -webkit-box-shadow: 1px 2px 5px 0px rgba(0, 0, 0, 0.75);
    -moz-box-shadow: 1px 2px 5px 0px rgba(0, 0, 0, 0.75);
    box-shadow: 1px 2px 5px 0px rgba(0, 0, 0, 0.75);
    border-radius: 2px;
    display: inline-block;
    vertical-align: middle;
    position: fixed;
    top: 50%;
    left: 50%;
    min-height: 60px;
    width: 400px;
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    z-index: 10000;
}

@media (max-width: 768px) {
    .fileUploadProgress span {
        width: 100%;
    }
}