print preview css: fix labels

chrome/browser/resources/options/options_page.css

 .hbox {
   display: -webkit-box;
   -webkit-box-orient: horizontal;
 }
 
 .vbox {
   display: -webkit-box;
   -webkit-box-orient: vertical;
 }
 
@@ skipping 41 matching lines @@
 /*
  * Override the font-size rule in shared_options.css file.
  * 16 px font-size proved to be more touch friendly. It increases the touchable
  * area for buttons and input boxes.
  */
 body {
   font-size: 16px;
 }
 </if>
 
-
 .overlay {
   -webkit-box-align: center;
   -webkit-box-orient: vertical;
   -webkit-box-pack: center;
   -webkit-transition: 0.25s opacity;
   background: -webkit-radial-gradient(rgba(127, 127, 127, 0.5),
                                       rgba(127, 127, 127, 0.5) 35%,
                                       rgba(0, 0, 0, 0.7));
   bottom: 0;
   display: -webkit-box;
@@ skipping 530 matching lines @@
 .displaytable > section > * {
   display: table-cell;
   vertical-align: baseline;
   border-bottom: 1px solid #eeeeee;
 }
 
 /* do not display a border after the last section in the table */
 .displaytable:not([searching='true']) > section:last-child > *  {
   border-bottom: none;
 }