Update app.py

app.py

@@ -82,6 +82,37 @@ button {
   color: #fff;
 }
 
+
+button:hover {
+    cursor: pointer;
+    opacity: .7;
+}
+
+button:active{
+  box-shadow:  4px 4px 6px 0 rgba(255,255,255,.3),
+              -4px -4px 6px 0 rgba(116, 125, 136, .2), 
+    inset -4px -4px 6px 0 rgba(255,255,255,.2),
+    inset 4px 4px 6px 0 rgba(0, 0, 0, .2);
+}
+
+input {
+    background-color: #202428;
+    color: #fff;
+    border: 1px solid #2d353c;
+    border-radius: 5px;
+    padding: 10px 20px;
+    outline: none;
+    font-size: 16px;
+}
+
+::-webkit-input-placeholder {
+    color: #7a848f;
+}
+
+input:focus::placeholder {
+    color: transparent;
+}
+
 footer {
     visibility: hidden;
 }