chore: update terminal css

docs/assets/terminal.css

@@ -70,11 +70,14 @@ html[data-theme="dark"] {
   box-sizing: border-box;
 }
 
-html,
-body {
+html {
   height: 100%;
 }
 
+body {
+  min-height: 100%;
+}
+
 body {
   margin: 0;
   font-family: var(--font-body);