Solution - 1

In your screen.css file, at about line # 1534, instead -

#navigation {
bottom:0;
height:60px;
position:absolute;
right:-15px;
}

navigation {
bottom:0;
height:40px;
position:absolute;
left:-10px;
}

Solution - 2

Add this to your style.css through the WordPress theme editor:

#navigation {
   bottom: -10px!important; // adjust for how low you want it.
   left: 0!important;
}