Fix some style issues in the docs
diff --git a/docs/_static/custom.css b/docs/_static/custom.css
index b54dd24..2bb5995 100644
--- a/docs/_static/custom.css
+++ b/docs/_static/custom.css
@@ -5,3 +5,8 @@
 code.descname {
     color: #4885ed;
 }
+
+th.field-name {
+    min-width: 100px;
+    color: #3cba54;
+}