How to i keep css code such that on print bodyContent need to be printed below 310 pixel

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My css is to print static table pageHeader on all pages and bobyContent to be printed below 310px (after pageHeader).

Below css was working previously but after chrome and firfox update it is not working properly.

`  @media print {
        .bodyContent { padding-top: 310px; }
        table.pageHeader {
            position: fixed;
            top: 0;

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