refine input group margin

pywebio/html/css/app.css

@@ -115,9 +115,16 @@ td blockquote, td dl, td ol, td p, td pre, td table, td ul, td button, td pre {
     margin-bottom: 0 !important;
 }
 
+.form-group {
+    margin-bottom: 0.4rem;
+}
 
-.input-container .form-group {
-    margin-bottom: 0;
+.form-group label {
+    margin-bottom: 0px;
+}
+
+#input-container .card-body {
+    padding: 0.8rem 1.25rem;
 }
 
 img {