.reveal h1 { font-size: 2.0em;
             text-shadow: none;
             font-weight: bold;
             text-transform: none;
           }

.reveal h2 { font-size: 1.5em;
           }

.reveal .theorem {
  display: block;
  text-align: left;
  font-style: normal;
  border-left-style: solid;
  border-left-color: cornflowerblue;
  padding-left: 10px;
  border-left-width: 5px;
}
.reveal .theorem:before {
  content: "Theorem. ";
  font-weight: bold;
  color: cornflowerblue;
  font-style: normal;
  padding-left: 10px;
}
.reveal .theorem[name]:before {
  content: attr(name);
}

.reveal blockquote {
    width: 90%;
}

.twocolumn {
   display: grid;
   grid-template-columns: 1fr 1fr;
   grid-gap: 40px;
   text-align: left;
}

.threecolumn {
   display: grid;
   grid-template-columns: 1fr 1fr 1fr;
   grid-gap: 20px;
   text-align: left;
}

/* .reveal .title { */
/*     color: white; */
/* } */

/* .reveal .date { */
/*     color: white; */
/* } */

.reveal .block {
  border: 5px solid var(--custom-emph);
  border-radius: 10px;
  background-color: cornflowerblue;
  padding: 0.25em;
  text-align: center;
  box-shadow: 3px 3px 4px rgba(0, 0, 0, 0.5);
}