* {
    box-sizing: border-box;
}
body {
  background-color:#ffffcc;
}
.col{
  margin-left: 4%;
  margin-right: 4%;
}
.right {
  text-align: right;
  opacity: 0.7;
}
.button {
  margin-top: 0.5em;
  background-color: #ddffff;
  color: black;
  border: solid;
  border-color: rgba(0,0,0,0.1);
  border-radius:8px;
  padding: 0.5em 0.5em;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 120%;
  box-shadow: 1px 2px 4px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
  cursor: pointer;
  width: 75%;
}
ul {
  line-height: 2;
}

@media only screen and (min-width: 768px) {
  /* For desktop: */
  .col {
    width: 50%;
    margin: auto;
  }
}