html - Lost Background on Wordpress Post Area -

i'm in need of serious help. i'm working on wordpress website , removed shouldn't have, , can't back, plus, i'm not sure deleted. page seems affected home page, while rest of pages fine.

i trying remove few things sidebar, , they're gone now, post background gone (needs white), , footer pushed left side.

i've looked @ page encoding through browser, , can identify div it's in, however, i'm having trouble locating in wordpress files.

any appreciated.

the website located here: http://mathenyheatcool.com/

here's code editing (i working @ bottom):

enter code here <?php /* template name: matheny home page */ ?>    <?php get_header(); ?>   <?php if (have_posts()) : while (have_posts()) : the_post();?> <div class="post"> <?php the_content(); ?>  </div> <?php endwhile; endif; ?>     <div id="matheny-sidebar-block">  <div style="width:100%;text-align:center;"><a href="http://www.mathenyheatcool.com/contact-us/schedule-service/"> <img src="http://www.mathenyheatcool.com/wp-content/uploads/2012/03/schedule-repair-service.png" alt="heating , cooling repair service"></a></div>  <br />   <div style="width:100%;text-align:left;">  <?php $monthname = date("f"); if($monthname == "march" || $monthname == "april" || $monthname == "may"){ echo '<a href="http://www.mathenyheatcool.com/schedule-service/"><span style="font-size:large;color:#d2691e;">it\'s time spring maintenance</span></a>';    echo '<br /><strong>get ac cleaned & checked</strong><br/><div style="text-align:left;font-size:small;">preventative maintenance means fewer systems failures , prolongs life of heating , cooling equipment , ensures efficient operation. <a href="http://www.mathenyheatcool.com/services/#heating_cooling_maintenance">planned maintenance contracts</a> available.</div><a href="http://www.mathenyheatcool.com/schedule-service/"><strong>click here</a> or call @ 314-727-9000</strong></div><div style="font-size:small;"> schedule cooling system maintenance appointment.'; } elseif($monthname == "september" || $monthname == "october" || $monthname == "november")  { echo '<a href="http://www.mathenyheatcool.com/schedule-service/"><span style="font-size:large;color:#d2691e;">it\'s time fall maintenance</span></a>';   echo '<br /><strong>get heating cleaned & checked</strong><br/><div style="text-align:left;font-size:small;">preventative maintenance means fewer systems failures , prolongs life of heating , cooling equipment , ensures efficient operation. <a href="http://www.mathenyheatcool.com/services/#heating_cooling_maintenance">planned maintenance contracts</a> available.</div><a href="http://www.mathenyheatcool.com/schedule-service/"><strong>click here</a> or call @ 314-727-9000</strong></div><div style="font-size:small;"> schedule heating system maintenance appointment.'; } else{ echo '<a href="http://www.mathenyheatcool.com/schedule-service/"><span style="font-size:large;color:#d2691e;">need regular maintenance?</span></a>';   echo '<br /><strong>get system cleaned & checked</strong><br/><div style="text-align:left;font-size:small;">preventative maintenance means fewer systems failures , prolongs life of heating , cooling equipment , ensures efficient operation. <a href="http://www.mathenyheatcool.com/services/#heating_cooling_maintenance">planned maintenance contracts</a> available.</div><a href="http://www.mathenyheatcool.com/schedule-service/"><strong>click here</a> or call @ 314-727-9000</strong></div><div style="font-size:small;"> schedule heating , cooling system maintenance appointment.';  } ?> </div>  <br /><br /> <div style="width:100%;text-align:center;"><a href="http://www.mathenyheatcool.com/schedule-comfort-consultation/"> <span style="font-size:x-large;color:#707070;">time new equipment?</span> <img src="http://mathenyheatcool.com/wp-content/uploads/2012/03/new_air_conditioner.jpg" /></a><br /><strong>free in-home comfort consultation</strong><br/><div style="text-align:left;font-size:small;">we independent american standard customer care dealer specializing in high-efficiency heating , cooling systems.</div><a href="http://www.mathenyheatcool.com/schedule-comfort-consultation/"><strong>click here</a> or call @ 314-727-9000</strong></div><div style="font-size:small;"> schedule free in-home comfort consultation.</div>   <br /><br />  <br />  </div>     <?php get_sidebar('home1'); ?>   </div>  <?php get_footer(); ?>