diff --git wp-admin/css/wp-admin.css wp-admin/css/wp-admin.css
index fb8f499..cc57516 100644
--- wp-admin/css/wp-admin.css
+++ wp-admin/css/wp-admin.css
@@ -3522,38 +3522,36 @@ td.plugin-title p {
 }
 
 .revisions-controls input[type="checkbox"] {
 	position: relative;
 	top: -1px;
 	vertical-align: text-bottom;
 }
 
 .revisions-tickmarks {
 	position: relative;
 	margin: 0 auto;
 	height: 0.8em;
-	z-index: 2;
 	top: 7px;
 	width: 100%;
 	padding: 0 15%;
 	-moz-box-sizing: border-box;
 	-webkit-box-sizing: border-box;
 	box-sizing: border-box;
 }
 
 .revisions-tickmarks > div {
 	position: relative;
 	height: 100%;
 	float: left;
-	z-index: 3;
 	border-style: solid;
 	border-width: 0 1px 0 0;
 	-moz-box-sizing: border-box;
 	-webkit-box-sizing: border-box;
 	box-sizing: border-box;
 }
 
 .revisions-tickmarks > div:last-child {
 	border-width: 0;
 }
 
 .comparing-two-revisions .revisions-controls {
@@ -3623,25 +3621,25 @@ td.plugin-title p {
 	top: 0;
 	right: 0;
 }
 
 .comparing-two-revisions .revisions-previous,
 .comparing-two-revisions .revisions-next {
 	display: none;
 }
 
 .revisions-previous,
 .revisions-next {
 	position: relative;
-	z-index: 4;
+	z-index: 1;
 }
 
 .revisions-previous {
 	float: left;
 }
 
 .revisions-next {
 	float: right;
 }
 
 .wp-slider {
 	width: 70%;
@@ -3734,25 +3732,25 @@ table.diff .diff-addedline ins {
 
 .comparing-two-revisions #diff-title-from,
 .comparing-two-revisions #diff-header-from {
 	display: block;
 }
 
 .revisions-tooltip {
 	position: absolute;
 	bottom: 105px;
 	margin-right: 0;
 	margin-left: -70px;
 	line-height: 28px;
-	z-index: 9999;
+	z-index: 1;
 	max-width: 350px;
 	min-width: 130px;
 	padding: 4px;
 	display: none;
 	opacity: 0;
 	-webkit-transition: left 15ms;
 	-moz-transition:    left 15ms;
 	-ms-transition:     left 15ms;
 	-o-transition:      left 15ms;
 	transition:         left 15ms;
 }
 
@@ -3848,35 +3846,33 @@ div.revisions-controls > .wp-slider > .ui-slider-handle {
 .wp-slider .ui-slider-handle.from-handle:before {
 	background-position: -5px -84px;
 	left: 7px;
 }
 
 .wp-slider .ui-slider-handle.to-handle:before {
 	background-position: -4px -65px;
 	left: 5px;
 }
 
 .wp-slider .ui-slider-range {
 	position: absolute;
-	z-index: 1;
 	font-size: .7em;
 	display: block;
 	border: 0;
 	background-color: transparent;
 	background-image: none;
 }
 
 .wp-slider.ui-slider-horizontal {
 	height: .8em;
-	z-index: 10001;
 }
 
 .wp-slider.ui-slider-horizontal .ui-slider-handle {
 	top: -.25em;
 	margin-left: -.6em;
 }
 
 .wp-slider.ui-slider-horizontal .ui-slider-range {
 	top: 0;
 	height: 100%;
 }