Add some padding and update colors

src/style.css

@@ -38,6 +38,7 @@ button {
   border-radius: 8px;
   border: 1px solid transparent;
   padding: 0.6em 1.2em;
+  margin: 0.2em;
   font-size: 1em;
   font-weight: 500;
   font-family: inherit;
@@ -53,29 +54,20 @@ button:focus-visible {
   outline: 4px auto -webkit-focus-ring-color;
 }
 
-@media (prefers-color-scheme: light) {
-  :root {
-    color: #213547;
-    background-color: #ffffff;
-  }
-  a:hover {
-    color: #747bff;
-  }
-  button, #light {
-    background-color: #f9f9f9;
-  }
-}
-
 #output {
   display: flex;
+  align-items: center;
+  margin-bottom: .4em;
 }
 #display {
   flex-grow: 1;
+  text-align: left;
+  padding: 0.5em 1.2em;
 }
 
 #light {
-  width: 24px;
-  height: 24px;
+  width: 2.5em;
+  height: 2.5em;
   border-radius: 50%;
   background-color: #1a1a1a;
 }
@@ -97,3 +89,16 @@ button:focus-visible {
 #keypad > button:last-child {
   grid-column: 3;
 }
+
+@media (prefers-color-scheme: light) {
+  :root {
+    color: #213547;
+    background-color: #ffffff;
+  }
+  a:hover {
+    color: #747bff;
+  }
+  button, #light {
+    background-color: #eeeeee;
+  }
+}