.abstract { display: none; cursor: pointer; }
  .toggle { cursor: pointer; }
  .plusminus {font-size:110%; color: blue; }
  .doi {font-size:60%; color: blue; }
  .talktitle {font-style: italic;}

  td {padding:2px; border:2px SOLID black;}

  .day {height:40px; text-align:center; font-size: 120%; font-weight: bold; }
  .gap {height:10px; }
  
  .set6 {width:8%; border:0px; padding:0px;}
  .set4 {width:22.5%; border:0px; padding:0px;}
  .set2 {width:45%; border:0px; padding:0px;}
  .set1 {width:83%;}
  .timespace {width:17%; border:0px; padding:0px;}

  .talk { vertical-align:top; }
   
  .socg-session {height:30px; background-color:#cceeff}
  .free {height:30px; background-color:#e6e6e6}
  .invited { height:30px; background-color:#ffcccc}
  .media { height:30px; background-color:#e6ffb3}
  .media2 {height:30px; background-color:#ddff99}
  .workshop {height:30px; background-color:#ffdd99}
  .business {height:30px; background-color:#d6a9bf}
  .chazelle {height:30px; background-color:#ffff99}
   .bc60 {height:30px;}
  
  .day {background-color:#FFFF00}
  .coffee {background-color:#D2691E}
  .social {background-color: #d5f5e3}
  .keynote {background-color: #f5eef8}

  .yrf {background-color: #f9e79f}
  .ml {background-color: #d6eaf8}
  .fg {background-color: #f2f3f4}
  .cg {background-color: #f1948a}
  .ct {background-color: #5499c7}
  .ef {background-color: #f39c12}

  
  
  
  
.slideslink {
  color: blue;
}

/* Tooltip container 
https://www.w3schools.com/css/css_tooltip.asp
*/
.tooltip {
  position: relative;
  display: inline-block;
  border-bottom: 1px dotted black; /* If you want dots under the hoverable text */
}

/* Tooltip text */
.tooltip .tooltiptext {
  visibility: hidden;
  width: 160px;
  bottom: 100%;
  left: 50%;
  margin-left: -60px; /* Use half of the width (120/2 = 60), to center the tooltip */
  background-color: black;
  color: #fff;
  text-align: center;
  padding: 5px 0;
  border-radius: 6px;
 
  /* Position the tooltip text - see examples below! */
  position: absolute;
  z-index: 1;
}

.tooltip .tooltiptext::after {
  content: " ";
  position: absolute;
  top: 100%; /* At the bottom of the tooltip */
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: black transparent transparent transparent;
}

/* Show the tooltip text when you mouse over the tooltip container */
.tooltip:hover .tooltiptext {
  visibility: visible;
}