html - DOMPDF: How to make image posted from user be positioned fixed on top when @page margin-top is also defined by the user? -

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i've searched everywhere here in , elsewhere have issue fixed. tips , advise appreciated , in advance. kindly refer sample code below:

#letterheaderdiv{              position: fixed;       left: 0px;       top:  -220px;        right: 0px;       width: 100%;      border: 1px solid red;      overflow: hidden;      }    #actioniteminfo {       position: fixed;       left: 0px;       top:  -100px;        right: 0px;       height: 50px;     }  #actionitemlettersfooter{        position: fixed;       bottom: 0 !important;               height: 50px;               line-height: 0.5 !important;               padding-top: 0.5em;  }  .bodysection.letter{     top:0;     position: relative;     line-height:1.5px;  }
<div class="contentsection" id="letterprintbody">    <div id="letterheaderdiv">      <table style="top: 0px;  padding-bottom:0px; left: 0px ; margin-left: 0px; margin-right: auto; " id="letterheadertable">        <img id="letter_header">      </table>    </div>    <div class="headsection headsectionactionitem" id="actioniteminfo">        <table style=" padding-bottom:0px; left: 0px ; margin-left: 0px; margin-right: auto; ">        <tr>          <td>            <ul class="details_list ">              <li><label>name: </label></li>              <li><label>age: </label></li>              <li><label>address: </label></li>            </ul>          </td>        </tr>      </table>      <table style="right:0px ; margin-left: auto; margin-right: 0px; " >        <tr>          <td>            <ul class="details_list ">              <li><label>visit date: </label></li>              <li><label>sex: </label></li>            </ul>          </td>        </tr>      </table>    </div>    <div class="footersectionnoborder print_only" id="actionitemlettersfooter">      <table style="right:0px ; margin-left: auto; margin-right: 0px;">        <tr>          <td>            <ul class="details_list ">              <li><span id="letterprintaction_physician"></span></li>              <li><label class="letter_license_no">license no: </label><span id="letterprintaction_licenseno"></span></li>              <li><span id="letterprintaction_ptr"></span></li>              <li><span id="letterprintaction_s2"></span></li>            </ul>          </td>        </tr>      </table>    </div>    <div class="bodysection letter"></div>    </div>

here's php code printing of pdf:

if(isset($_post['letter_size'])){  $letter_size = $_post['letter_size']; $top_margin = $_post['top_margin']; $right_margin = $_post['right_margin']; $bottom_margin = $_post['bottom_margin']; $left_margin = $_post['left_margin']; $font_size = $_post['font_size']; $letter_head = $_post['letter_head'];  if($letter_size == 'bondpaper'){     $html .= '<style>';      $html .= '@page { margin-top: '.$top_margin.'; margin-right: '.$right_margin.'; margin-bottom: '.$bottom_margin.'; margin-left: '.$left_margin.'; width : 8.5in ; height : 11in ;  font-size : 10pt !important ;  }';     $html .= 'body {   }';     // $html .= '#letter_header{ background-image: url('.$letter_head.');  }';     $html .= '.actionitems,.letter{ font-size : '.$font_size.' !important ; } ';     $html .= '</style>';     $page_size = array(0,0,612.00,792.00);     //bond paper page size 8.5" x 11"  }else if($letter_size == 'rx_pad'){     $html .= '<style>';     $html .= '@page {margin-top: '.$top_margin.'; margin-right: '.$right_margin.'; margin-bottom: '.$bottom_margin.'; margin-left: '.$left_margin.'; width : 8.5in ; height : 11in ;  font-size : 10pt !important ;  }';     $html .= 'body {   }';         // $html .= '#letter_header{ background-image: url('.$letter_head.');  }';     $html .= '.actionitems,.letter{ font-size : '.$font_size.' !important ; } ';     $html .= '</style>';     $page_size = array(0,0,396.00,612.00);      //rx pad page size 6" x 9"  }}

for php code above, don't know do/how positioned image on top when @page margin-top set user (e.g. @page{margin-top: 3in}, @page{margin-top: 2in} ). everytime test different image having not having same dimension, image positioned overlapped @ ul class="details_list".





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