diff --git a/src/index.css b/src/index.css
index b4cc725..c161b9b 100644
--- a/src/index.css
+++ b/src/index.css
@@ -1,5 +1,26 @@
-body {
+html {
+  box-sizing: border-box;
+}
+
+*,
+*:before,
+*:after {
+  box-sizing: inherit;
+}
+
+html,body{
   margin: 0;
   padding: 0;
+
+  width: 100%;
+  height: 100%;
+}
+
+body {
   font-family: sans-serif;
 }
+
+#root{
+  width: 100%;
+  height: 100%;
+}
\ No newline at end of file