revert theme changes

docs/_static/my_theme.css

@@ -1,31 +1,3 @@
 .wy-nav-content {
     max-width: 1200px !important;
-}
-
-button.sphinx-tabs-tab {
-    padding: 0.3rem 1rem;
-}
-
-button.sphinx-tabs-tab[aria-selected="true"] {
-    border-bottom-width: 2px;
-}
-
-.rst-content .sphinx-tabs-panel [class^="highlight"] {
-    margin: 0;
-}
-
-.rst-content .code-block-caption {
-    text-align: left;
-    background-color: #c8d9a6;
-    border-top-left-radius: 12px;
-    border-top-right-radius: 12px;
-    font-weight: bold;
-    font-style: normal;
-    padding: 8px 12px;
-    border: 1px solid #e1e4e5;
-    border-bottom-width: 0;
-}
-
-.rst-content div[class^="highlight"] {
-    margin-top: 0;
-}
+}