fix styling

css/style.css

@@ -1,5 +1,8 @@
 body {
 	background-color:black;
+	min-height: 100vh;
+	display: grid;
+	grid-template-rows: auto 1fr auto;
 }
 
 h1, h2, h3, p {
@@ -34,7 +37,7 @@ footer p {
 @media screen and (min-width: 480px) {
 .center-div {
 	min-width: 480px;
-	max-width: 50%;
+	max-width: 40ch;
 	width: fit-content;
 	margin-left: auto;
 	margin-right: auto;
@@ -43,8 +46,8 @@ footer p {
 @media screen and (max-width: 480px) {
 .center-div {
 	width: 100%;
-	margin-left: auto;
-	margin-right: auto;
+	margin-left: 10px;
+	margin-right: 10px;
 }
 }