BODY {color: black;
	  bgcolor: white; 
 	  font-family: "Trebuchet MS","Helvetica neue",Helvetica,Arial,Verdana,sans-serif; "Times New Roman", Times, serif}
P {text-align: left;
	margin-left: 5%;
	margin-right: 5%;}
H1, H2, H3 {color: #3642eb}
UL {color: black}
a:link.menu {color: #3642eb;
		font-weight: bold;}
a:visited.menu {color: ##8b36eb;
		font-weight: bold;}
a:active.menu {color: #2ca7ab;
		font-weight: bold;}
p speaker {font-weight: bold;}
p affil {color: #5e5757;}
p talk {color:  #1342CE;
                               margin-left: 5%;}
p speakerprelim {font-weight: bold;
                               color:  #1E8728;}
p talkprelim {color:  #2BBB39;
                               margin-left: 5%;}

/* ------- Для кнопки "Abstract show/hide" --------------  */  
.del { display: none; }
.del:not(:checked) + label + * { display: none; } /* фактически нужна только одна строка */

/* вид CSS кнопки */
.del:not(:checked) + label,
.del:checked + label {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 2px;
            color: #355BCB;
/* --            color: #fff;   -- original  */
/* --            background: #4e6473;    --original--*/
            cursor: pointer; }
.del:checked + label {
            color: #e36443;
/* --            background: #e36443; }  --original--  */

/* --------------------------------------------------------------------- */