:bug: 返回按钮位置调整

src/stage/index/style/Mixins.less

@@ -35,7 +35,7 @@
 	position: absolute;
 	width: .93rem;
 	height: .94rem;
-	bottom: .1rem;
+	top: 9.75rem;
 	right: .15rem;
 	border: solid unit(@borderSize, rem) transparent;
 	border-radius: 50%;