Problem to select links in Safari 4

I detect a strange problem only in Safari 4. there is a margin left and right to content with this code:

 .two-sidebars #content-inner
  {
    padding-left: 200px; /* The width + left margin of #sidebar-left. */
    padding-right: 200px; /* The width + right margin of #sidebar-right. */
	
  } 

but in safari this invisible margins behaviours like a mask avoiding to click any link or field back of this margins

i fixed with some position:relative; and z-index the #sidebar-left #sidebar-right up of #content in layout-liquid.css