Watermark in Pdf using css or roativa (PDF generater)

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CSS

PDF

CSS3

MVC4

I am using rotativa for generate PDF in MVC.

I want watermark in all pages of PDF but unfortunately I am not achieving this.

I have researched also for rotativa but can't find any proper solution for this. And then I have tried this using CSS.

I have tried this


CSS

#background {
               position: absolute;
               display: block;
               min-width: 100%;
               opacity: 0.5;
               text-align: center;
               background-color: transparent;
               padding-top:50%;
           }
           #bg-text {
               color: lightgrey;
               font-size: 120px;
               transform: rotate(300deg);
               -webkit-transform: rotate(300deg);
               opacity: 0.9;
               filter: alpha(opacity=50);
               background-color: transparent;
           }

HTML

<div id="background">
           <p id="bg-text">Draft</p>
       </div>

It's works fine for first page of PDF. And I want this in all pages of PDF.
Please suggest me a proper solution for this problem of watermark.

Any solution will be appreciable using CSS or using rotativa