diff --git a/assets/css/extended/zpb-tufte-sidenotes.css b/assets/css/extended/zpb-tufte-sidenotes.css
deleted file mode 100644
index 02ee5e5..0000000
--- a/assets/css/extended/zpb-tufte-sidenotes.css
+++ /dev/null
@@ -1,93 +0,0 @@
-/* Unabashedly stolen from tufte-css https://github.com/edwardtufte/tufte-css */ 
-/* Sidenotes, margin notes, figures, captions */
-img { max-width: 100%; }
-
-.sidenote, .marginnote { float: right;
-                         clear: right;
-                         margin-right: -60%;
-                         width: 50%;
-                         margin-top: 0;
-                         margin-bottom: 0;
-                         font-size: 1.1rem;
-                         line-height: 1.3;
-                         vertical-align: baseline;
-                         position: relative; }
-
-.table-caption { float:right;
-                 clear:right;
-                 margin-right: -60%;
-                 width: 50%;
-                 margin-top: 0;
-                 margin-bottom: 0;
-                 font-size: 1.0rem;
-                 line-height: 1.6; }
-
-.sidenote-number { counter-increment: sidenote-counter; }
-
-.sidenote-number:after, .sidenote:before { content: counter(sidenote-counter) " ";
-                                           position: relative;
-                                           vertical-align: baseline; }
-
-.sidenote-number:after { content: counter(sidenote-counter);
-                         font-size: 1rem;
-                         top: -0.5rem;
-                         left: 0.1rem; }
-
-.sidenote:before { content: counter(sidenote-counter) " ";
-                   top: -0.5rem; }
-
-@media screen and (max-width: 760px) { p, footer { width: 90%; }
-                                       pre.code { width: 87.5%; }
-                                       ul { width: 85%; }
-                                       figure { max-width: 90%; }
-                                       figcaption, figure.fullwidth figcaption { margin-right: 0%;
-                                                                                 max-width: none; }
-                                       blockquote p, blockquote footer { width: 90%; }}
-
-.sans { font-family: sans-serif;
-        letter-spacing: .03em; }
-
-.code { font-family: monospace;
-        font-size: 1.125rem;
-        line-height: 1.6; }
-
-.marginnote .code, .sidenote .code { font-size: 1rem; }
-
-pre.code { width: 52.5%;
-           padding-left: 2.5%;
-           overflow-x: scroll; }
-
-.fullwidth { max-width: 90%;
-             clear:both; }
-
-label.sidenote-number { display: inline; }
-
-label.margin-toggle:not(.sidenote-number) { display: none; }
-
-@media (max-width: 760px) { label.margin-toggle:not(.sidenote-number) { display: inline; }
-                            .sidenote, .marginnote { display: none; }
-                            .margin-toggle:checked + .sidenote,
-                            .margin-toggle:checked + .marginnote { display: block;
-                                                                   float: left;
-                                                                   left: 1rem;
-                                                                   clear: both;
-                                                                   width: 95%;
-                                                                   margin: 1rem 2.5%;
-                                                                   vertical-align: baseline;
-                                                                   position: relative; }
-                            label { cursor: pointer; }
-                            pre.code { width: 90%;
-                                       padding: 0; }
-                            .table-caption { display: block;
-                                             float: right;
-                                             clear: both;
-                                             width: 98%;
-                                             margin-top: 1rem;
-                                             margin-bottom: 0.5rem;
-                                             margin-left: 1%;
-                                             margin-right: 1%;
-                                             vertical-align: baseline;
-                                             position: relative; }
-                            div.table-wrapper, table, table.booktabs { width: 85%; }
-                            div.table-wrapper { border-right: 1px solid #efefef; }
-                            img { width: 100%; } }