diff --git a/sass/layout/_modal.sass b/sass/layout/_modal.sass
index 60445b6..17f4f79 100644
--- a/sass/layout/_modal.sass
+++ b/sass/layout/_modal.sass
@@ -7,6 +7,16 @@ $header-modal-height : $menu-height
 
 // style
 
+@mixin modal-blackout
+	display: block
+	background: rgba(0,0,0, 0.6)
+	z-index: -1
+	position: fixed
+	left: 0
+	top: 0
+	width: 100%
+	height: 100%
+
 .modal-blackout
 	display: none
 
@@ -110,6 +120,7 @@ $header-modal-height : $menu-height
 
 
 	.modal-content
+		background: #fff
 		width: 100%
 		@extend .clear-fix
 		overflow: hidden
diff --git a/sass/layout/_prompt.sass b/sass/layout/_prompt.sass
index 34cc7bb..3339208 100644
--- a/sass/layout/_prompt.sass
+++ b/sass/layout/_prompt.sass
@@ -13,6 +13,7 @@
 		padding: 0 20px 20px 0
 		float: right
 	.modal-content
+		background: #fff
 		padding: 20px
 		.post-area
 			textarea