Clean up papers_header.txt

docs/stylesheets/papers_header.txt

@@ -1,4 +1,4 @@
-# PySR Showcase
+# Research
 Below is a showcase of papers which have used PySR to discover
 or rediscover a symbolic model.
 These are sorted by the date of release, with most recent papers at the top.
@@ -7,30 +7,3 @@ These are sorted by the date of release, with most recent papers at the top.
 If you have used PySR in your research,
 please submit a pull request to add your paper to [this file](https://github.com/MilesCranmer/PySR/blob/master/docs/papers.yml).
 
-
-<style>
-.row {
-  display: flex;
-  gap: 25px;
-}
-.row:after {
-  content: "";
-  display: table;
-  clear: both;
-}
-.image_column {
-  flex: 50%;
-  float: left;
-  display: flex;
-  justify-content: center;
-  align-items: center;
-  text-align: center;
-}
-.text_column {
-  flex: 50%;
-  padding: 10px;
-}
-.center {
-  text-align: center;
-}
-</style>