common/static/common/styles/studio/_modal.sass

@@ -59,20 +59,20 @@
 
 .modal-content
   background-color: var(--color-bg-secondary)
+  height: 100%
 
   +media-md
     flex-direction: row
-    height: 100%
 
 .modal-dialog
   border-radius: var(--border-radius-lg)
   height: 100vh
-  +margin(0, y)
-  +padding(4, top)
+  +margin(0)
   max-width: 100%
 
   +media-md
     height: 100vh
+    +margin(auto, x)
     max-width: calc(100% - (5.6rem * 2 + var(--spacer-4) * 4)
     +padding(4, y)
 
@@ -120,9 +120,10 @@
       position: absolute
 
   &.modal-close
-    right: var(--spacer-4)
+    right: 0
 
     +media-md
+      right: var(--spacer-4)
       top: var(--spacer-4)
 
   &.next