diff --git a/static/style.css b/static/style.css
index 4b60509..ca9b900 100644
--- a/static/style.css
+++ b/static/style.css
@@ -1,3 +1,7 @@
+* {
+  box-sizing: border-box;
+}
+
 html {
   height: 100%;
 }