css - Extend DIV beyond WordPress page container -


i've seen lot of questions this, want extend 1 div in wordpress beyond page content.

i have contact page, , want google map take of bottom of browser above footer. want able (if possible) within cms , not creating specific page template.

current code simply: <div id='gmap_canvas' style='height:440px;width:100%;'></div>

i'm using theme (sydney) built in bootstrap if helps.

something this?

.gmaps {    background: url(https://www.somersethouse.org.uk/images/mi/visit/map.jpg);    height: 200px; /*might not needed you*/    position: absolute;    bottom: 0;    left: 0;    right: 0;  }
<!doctype html>  <html>    <head>    <script src="https://code.jquery.com/jquery.min.js"></script>    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" type="text/css" />    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>    <meta charset="utf-8">    <meta name="viewport" content="width=device-width">    <title>js bin</title>  </head>    <body>    <div class="container">      content      <div class="gmaps">        </div>    </div>  </body>    </html>

note: assumes parent in gmaps div gonna placed in, doesn't have positioning context applied. it's position static.