      is present, this is also used as the padding between the image and the text.
      Default is 10.0.
     */
-    var horizontalPadding = 10.0
+    var horizontalPadding: CGFloat = 10.0
     
     /**
      The spacing from the vertical edge of the toast view to the content. When a title
      is present, this is also used as the padding between the title and the message.
      Default is 10.0.
     */
-    var verticalPadding = 10.0
+    var verticalPadding: CGFloat = 10.0
     
     /**
      The corner radius. Default is 10.0.
     */
-    var cornerRadius = 10.0;
+    var cornerRadius: CGFloat = 10.0;
     
     /**
      The title font. Default is `UIFont.boldSystemFontOfSize(16.0)`.

     Enable or disable a shadow on the toast view. Default is `false`.
    */
    var displayShadow = false;
    
    /**
     A value from 0.0 to 1.0, representing the opacity of the shadow.
     Default is 0.8 (80% opacity).
    */
    var shadowOpacity = 0.8 {
        didSet {
            shadowOpacity = max(min(shadowOpacity, 1.0), 0.0)
        }

    /**
     The shadow radius. Default is 6.0.
    */
    var shadowRadius: CGFloat = 6.0
    
    /**
     The shadow offset. The default is 4 x 4.
