<?php

add_action( 'widgets_init', 'kmgilbert_widgets_init' );

function kmgilbert_widgets_init() {
    register_sidebar( array(
        'name'          => 'Your Cool Sidebar Name',
        'id'            => 'some-sidebar-id',
        'description'   => 'A description of your sidebar.',
        'before_widget' => '<div id="%1$s" class="bottom-module %2$s">',
        'after_widget'  => '</div></div></div>',
        'before_title'  => '<h1 class="bottom-module-title"><span>',
        'after_title'   => '</span></h1><div style="margin-left:0px;" class="bottom-module-body"><div class="bottom-module-body-content">',
    ) );
}