fix(dashboard): fix traffic chart for blur theme

src/sass/theme/dashboard/_trafficChart.scss

@@ -9,6 +9,10 @@
     box-shadow: 0 0 5px 0 rgb(0, 0, 0) inset;
     border-radius: 150px;
   }
+  .chart-bg {
+    background-color: rgba(0,0,0,0.35);
+  }
+}
 
 .chart-bg {
   position: absolute;
@@ -16,9 +20,8 @@
   height: 180px;
   left: 60px;
   top: 60px;
-    background-color: rgba(0,0,0,0.35);
   border-radius: 100px;
-  }
+  background-color: transparent;
 }
 
 .channels-info {
@@ -97,7 +100,6 @@
   line-height: 24px;
   text-align: center;
   font-size: 18px;
-  //color: $danger;
   span {
     display: block;
     font-size: 18px;
@@ -168,18 +170,14 @@
   }
 }
 
-
 @media (max-width: 380px){
-
   .traffic-chart{
     width: 240px;
   }
-
   .canvas-holder{
     width: 240px;
     height: 240px;
   }
-
   .chart-bg {
     top: 30px;
   }