Fix lint issues and z-index of playback slider

src/components/remotecontrol/remotecontrol.css

@@ -58,6 +58,7 @@
 .nowPlayingPositionSliderContainer {
     margin: 0.2em 1em 0.2em 1em;
     width: 100%;
+    z-index: 0;
 }
 
 .nowPlayingInfoButtons {
@@ -79,7 +80,7 @@
 }
 
 .nowPlayingPageImageContainer {
-    width: 20%;
+    width: 16%;
     margin-right: 1em;
     position: relative;
     -webkit-flex-shrink: 0;
@@ -123,10 +124,11 @@
     bottom: 0;
     left: 0;
     right: 0;
+    margin: 0 auto;
+    width: 100%;
     -webkit-box-shadow: 0 0 1.9vh #000;
     box-shadow: 0 0 1.9vh #000;
     border: 0.1em solid #222;
-    user-drag: none;
     user-select: none;
     -moz-user-select: none;
     -webkit-user-drag: none;
@@ -142,15 +144,6 @@
     font-size: x-large;
 }
 
-.nowPlayingPageImageContainer {
-    width: 16%;
-}
-
-.nowPlayingPageImage {
-    margin: 0 auto;
-    width: 100%;
-}
-
 .nowPlayingSecondaryButtons {
     display: -webkit-box;
     display: -webkit-flex;