Add custom css for tests

assets/css/extended/custom.css

@@ -0,0 +1,38 @@
+/* Custom styles added to demo */
+
+.twitter-tweet {
+    margin: auto;
+}
+
+iframe {
+    border-radius: var(--radius) !important;
+}
+
+.home-info ul {
+    padding-inline-start: 20px;
+}
+
+.entry-cover img {
+    border: 1px solid var(--border);
+}
+
+/* line highlight fix start */
+.chroma .hl {
+    display: inherit;
+}
+
+.post-content table pre code {
+    padding: 10px 0px 10px 0px;
+}
+
+.chroma .lntd:first-of-type {
+    padding-inline-start: 10px;
+}
+
+.chroma .lntd:last-of-type {
+    padding-inline-end: 10px;
+    width: 100%;
+}
+
+/* line highlight fix end */
+