[Client] Improve alert component

src/client/app/app.styl

@@ -123,29 +123,3 @@ pre
 
 [data-icon]
 	display inline-block
-
-.swal2-container
-	z-index 10000 !important
-
-	&.swal2-shown
-		background-color rgba(0, 0, 0, 0.5) !important
-
-.swal2-popup
-	background var(--face) !important
-
-.swal2-content
-	color var(--text) !important
-
-.swal2-confirm
-	background-color var(--primary) !important
-	border-left-color var(--primary) !important
-	border-right-color var(--primary) !important
-	color var(--primaryForeground) !important
-
-	&:hover
-		background-image none !important
-		background-color var(--primaryDarken5) !important
-
-	&:active
-		background-image none !important
-		background-color var(--primaryDarken5) !important