cambio de colores

app/main.css

@@ -4,13 +4,18 @@
 }
 
 body {
-    padding: 40px 10%;
+    margin: 0;
+    padding: 0;
+    height: 60vh;
+    width: 100vw;
     display: flex;
     flex-direction: column;
     flex-wrap: wrap;
     align-items: center;
     justify-content: center;
-    background-color: rgb(171, 248, 152);
+    background-color: rgb(0, 0, 0);
+    color: white;
+    font-family: Verdana, Geneva, Tahoma, sans-serif;
 }
 
 h1 {
@@ -42,12 +47,17 @@ p {
 button {
     padding: 15px;
     border: none;
+    font-family: Verdana, Geneva, Tahoma, sans-serif;
+    color: white;
+    border: 2px solid;
+    background-color: rgba(0, 0, 0, 0);
+    border-radius: 5px;
 }
 
 .up {
-    background-color: rgb(12, 195, 120);
+    border-color: rgb(12, 195, 120);
 }
 
 .down {
-    background-color: rgb(200, 120, 120);
+    border-color: rgb(200, 120, 120);
 }