how to adjust footer in html code example

Example: membuat footer html

<div id="container">
    <div id="header">
        <h1>Layout Footer Menempel Ke Bawah</h1>
    </div>
    <div id="content">
        <!--Bisa diisi teks lorem ipsum dibagian ini-->
    </div>
    <div id="footer">
        Copyright © 2014
        Designed by ..............
    </div>
</div>