* {
  margin: 0;
  padding: 0;
}
body {
  margin: 5em;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
main {
  width: 65%;
  margin: 0 auto;
  padding: 0.4em;
  background-color: #eff7f7;
  border-radius: 0.3em;
  border: solid 1px #9299a0;
  box-shadow: 0px 0px 12px 7px rgba(204, 204, 204, 0.85);
}
section {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
section .spacer {
  margin-top: 1em;
}
section .apartado {
  width: 100%;
  flex-direction: row;
  background-color: #eae8e8;
}
section .derecha {
  text-align: right;
  justify-content: flex-end;
}
input {
  font-size: 3em;
  padding-right: 0.2em;
  text-align: right;
}
button {
  margin: 0.5em;
  width: 3em;
  height: 3em;
  font-size: 1.2em;
  font-weight: bold;
  text-transform: uppercase;
  display: inline-block;
  box-shadow: 0px 0px 3px 1px rgba(89, 89, 89, 0.85);
}
.grande {
  padding: 1em;
  font-size: 1.3em;
  font-weight: normal;
}
.error {
  color: #c94949;
}
.info {
  color: #4d6b4f;
}
ul {
  margin-top: 1em;
  list-style: none;
  margin: 1em;
}

li b {
  margin: 0.4em;
  width: 2.2em;
  height: 2.2em;
  display: inline-block;
  padding: 0.6em 0.3em 0 0.3em;
  background-color: #eae8e8;
  text-transform: uppercase;
  font-weight: bold;
  text-align: center;
  vertical-align: middle;
  border: 1px solid #9299a0;
  border-radius: 0.1em;
  box-shadow: 0px 0px 3px 1px rgba(89, 89, 89, 0.85);
}
#leyenda {
  margin: 1em 0.5em;
  padding: 0.8em;
  font-size: 1.2em;
  border-top: #9299a0 1px dashed;
}
#leyenda h3 {
  text-align: center;
  margin: 1em;
}
p {
  margin-top: 1em;
}