diff --git a/assets/style.css b/assets/style.css
index 82aa1e0..2b84e3e 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -1,4 +1,4 @@
-html, body{
+html, body, main {
     height: 100%;
 }
 
@@ -10,6 +10,11 @@ body {
 main {
     margin:0em 20em 0em 20em;
 }
+
+header, footer {
+    height: 5%;
+}
+
 header {
     background-color:black;
     padding:1em;