-body {
- margin: auto;
- max-width: 800px;
- background-color: #AEBECE;
-}
-
-h1, h2, h3, h4 {
- text-align: center;
-}
-
-h1, h2, h3, h4, strong {
- color: #900090;
-}
-
-pre {
- background-color: #CCCCCC;
-}
+body { background-color: #AEBECE }
+h1, h2, h3, h4 { text-align: center }
+h1, h2, h3, h4, strong { color: #900090 }
+pre { background-color: #CCCCCC }
+table, th, td { border: 1px solid black ; border-collapse: collapse }