Started on player controls, but volume slider is not complying

static/css/style.css

@@ -52,6 +52,10 @@ nav .brand-logo{
     padding-left: 20px;
 }
 
+#fp-nav {
+  background-color:rgba(45,45,45,1);
+}
+
 main {
     flex: 1 0 auto;
 }
@@ -135,6 +139,11 @@ nav{
 #playlist{
     padding:0px 15px;
 }
+
+#player{
+  height:95%;
+}
+
 .nav-btn
 {
     transition: background-color .2s;