diff --git a/_static/base.css b/_static/base.css
new file mode 100644
index 0000000..4bc8bdd
--- /dev/null
+++ b/_static/base.css
@@ -0,0 +1,4 @@
+a.external:after {
+  content: url("data:image/svg+xml,%3Csvg width='15' height='15' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%0A%3E%3Cpath d='M14.8284 12L16.2426 13.4142L19.071 10.5858C20.6331 9.02365 20.6331 6.49099 19.071 4.9289C17.509 3.3668 14.9763 3.3668 13.4142 4.9289L10.5858 7.75732L12 9.17154L14.8284 6.34311C15.6095 5.56206 16.8758 5.56206 17.6568 6.34311C18.4379 7.12416 18.4379 8.39049 17.6568 9.17154L14.8284 12Z' fill='%2352afe4' /%3E%3Cpath d='M12 14.8285L13.4142 16.2427L10.5858 19.0711C9.02372 20.6332 6.49106 20.6332 4.92896 19.0711C3.36686 17.509 3.36686 14.9764 4.92896 13.4143L7.75739 10.5858L9.1716 12L6.34317 14.8285C5.56212 15.6095 5.56212 16.8758 6.34317 17.6569C7.12422 18.4379 8.39055 18.4379 9.1716 17.6569L12 14.8285Z' fill='%2352afe4' /%3E%3Cpath d='M14.8285 10.5857C15.219 10.1952 15.219 9.56199 14.8285 9.17147C14.4379 8.78094 13.8048 8.78094 13.4142 9.17147L9.1716 13.4141C8.78107 13.8046 8.78107 14.4378 9.1716 14.8283C9.56212 15.2188 10.1953 15.2188 10.5858 14.8283L14.8285 10.5857Z' fill='%2352afe4' /%3E%3C/svg%3E");
+  margin: 2px;
+}