diff --git a/css/footnote-hack.css b/css/footnote-hack.css
new file mode 100644
index 0000000000000000000000000000000000000000..eebf114af3fa086f640da2ad9610a3bd79425efe
--- /dev/null
+++ b/css/footnote-hack.css
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+/*  Released as CC0: http://creativecommons.org/publicdomain/zero/1.0/ */
+/*   by Bradley M. Kuhn <bkuhn@ebb.org>  */
+
+.ui-tooltip, .arrow:after {
+background: black;
+border: 2px solid white;
+}
+.ui-tooltip {
+padding: 10px 20px;
+color: white;
+border-radius: 20px;
+box-shadow: 0 0 7px black;
+max-width: 50%;
+}
+.arrow {
+width: 70px;
+height: 16px;
+overflow: hidden;
+position: absolute;
+left: 50%;
+margin-left: -35px;
+bottom: -16px;
+}
+.arrow.top {
+top: -16px;
+bottom: auto;
+}
+.arrow.left {
+left: 20%;
+}
+.arrow:after {
+content: "";
+position: absolute;
+left: 20px;
+top: -20px;
+width: 25px;
+height: 25px;
+box-shadow: 6px 5px 9px -9px black;
+-webkit-transform: rotate(45deg);
+-ms-transform: rotate(45deg);
+transform: rotate(45deg);
+}
+.arrow.top:after {
+bottom: -20px;
+top: auto;
+}