mailing_list_search_form: add outline to improve readability

Author: a-gave

_includes/mailing_list_search_form.html

@@ -1,5 +1,5 @@
 
-<form action="https://lists.autistici.org/cgi-lurker/keyword.cgi" accept-charset="UTF-8" onsubmit="form_timezone(this)">
+<form id="mailing_list_search" action="https://lists.autistici.org/cgi-lurker/keyword.cgi" accept-charset="UTF-8" onsubmit="form_timezone(this)">
 <input type="hidden" name="doc-url" value="https://lists.autistici.org">
 <input type="hidden" name="format" value="en.html">
 <input type="hidden" name="list" value="libremesh">
@@ -15,3 +15,9 @@
 <input type="hidden" name="hour" value="0">
 <select name="mday"><option value="1" selected="">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option><option value="5">5</option><option value="6">6</option><option value="7">7</option><option value="8">8</option><option value="9">9</option><option value="10">10</option><option value="11">11</option><option value="12">12</option><option value="13">13</option><option value="14">14</option><option value="15">15</option><option value="16">16</option><option value="17">17</option><option value="18">18</option><option value="19">19</option><option value="20">20</option><option value="21">21</option><option value="22">22</option><option value="23">23</option><option value="24">24</option><option value="25">25</option><option value="26">26</option><option value="27">27</option><option value="28">28</option><option value="29">29</option><option value="30">30</option><option value="31">31</option></select><select name="mon"><option value="1">January</option><option value="2">February</option><option value="3">March</option><option value="4">April</option><option value="5">May</option><option value="6">June</option><option value="7">July</option><option value="8">August</option><option value="9">September</option><option value="10">October</option><option value="11">November</option><option value="12" selected="">December</option></select><select name="year"><option value="2022">2022</option><option value="2023">2023</option><option value="2024">2024</option><option value="2025" selected="">2025</option></select></td></tr>
 </tbody></table></form>
+
+<style>
+  #mailing_list_search input {
+    outline: 2px solid #dcdcdc;
+  }
+</style>