fix: Iframe height on intermediate widths + Modal background color

Author: ecnivtwelve

src/styles/iframes.styl

@@ -1,4 +1,6 @@
 .iframesContainer
+    --modal-shadow: rgba(0, 0, 0, 0.5)
+
     display flex
     flex-direction row
     width 100%
@@ -8,7 +10,6 @@
 
     iframe
         border 0
-        height 100%
 
     .controllerApp
         width 400px
@@ -33,7 +34,7 @@
 
     .controllerApp--mobile.open
         pointer-events auto
-        background var(--lt-shadowActive)
+        background var(--modal-shadow)
         left 0
 
     .controllerApp--desktop
@@ -46,3 +47,4 @@
     .controllerApp--desktop.open
         margin-left 0
         border-color var(--dividerColor)
+        background var(--paperBackgroundColor)