.column {
  float:left;
  width: 50%;
}

.black {
  background-color: #000;
  color: #555;
}

.ex {
  background-color: #f4f4f4;
  padding: 0 .25em .25em .25em;
  border-radius: .25em;
}
.ex:before {
   font-family: "FontAwesome";
   content: "\f109";
   font-size: 2em;
   opacity: .5;
 }
.ex p:first-of-type,
.ex ul:first-of-type {
  margin-top: .25em;
}
.ex p:last-of-type,
.ex ul:last-of-type {
  margin-bottom: 0;
}

/* Zeichen, falls Zeile zu lang wird: ⤸ */
.remark-code, .remark-inline-code {
  font-size: 24px;
}