diff --git a/src/style.scss b/src/style.scss
index bca5e41..0a17bbe 100644
--- a/src/style.scss
+++ b/src/style.scss
@@ -1,4 +1,5 @@
 .wp-block-flexible-table-block-table.wp-block-flexible-table-block-table {
+	box-sizing: border-box;
 
 	> table {