Add ability to restart the game

styles.css

@@ -3,47 +3,59 @@
 }
 
 body {
-    align-items: center;
     display: flex;
+    align-items: stretch;
     font-size: 16px;
     font-family: monospace;
-    flex-direction: column;
-    justify-content: center;
+    height: 100%;
+    margin: 0;
+}
+
+html {
+    height: 100%;
 }
 
 .entry {
     background: black;
     border: none;
-    border-top: 1px solid gray;
+    border-top: 1px solid #444;
     color: green;
+    flex: 0 0 auto;
     font-family: monospace;
     font-size: 16px;
     margin: 0;
     outline: none;
     padding: 0.5em 1em;
-    width: 800px;
+}
+
+.game {
+    display: flex;
+    flex: 1 1 100%;
+    flex-direction: column;
+    align-items: stretch;
+    justify-content: stretch;
+    height: 100%;
 }
 
 .log {
     background: black;
     color: green;
-    height: 600px;
+    flex: 1 1 100%;
     overflow-y: auto;
     padding: 0.25em 1em;
-    width: 800px;
 }
 
 .status {
     background: black;
     border: none;
-    border-bottom: 1px solid gray;
+    border-bottom: 1px solid #444;
     color: green;
     display: flex;
+    flex: 0 0 auto;
     font-family: monospace;
     font-size: 16px;
     margin: 0;
     padding: 0.5em 1em;
-    width: 800px;
 }
 
 .score {