diff --git a/component/_modal.scss b/component/_modal.scss
index ce3d251..2e116e9 100644
--- a/component/_modal.scss
+++ b/component/_modal.scss
@@ -45,7 +45,7 @@
       align-items: center;
     }
       
-    .sb-modal-fullscreen {
+    &.sb-modal-fullscreen {
       top: 0;
       position: fixed;
       bottom: 0;
@@ -66,7 +66,7 @@
         height: calc(100vh - 120px);
       }    
     }
-    .small {
+    &.small {
       color: $text-lightDark;
     }