@media screen and (min-width: 680px){   
  .pc { display:block; }
  .sp { display:none; }
}
@media screen and (max-width: 680px){   
  .pc { display:none; }
  .sp { display:block; }
}


.btn {
  max-width: 300px;
  border-radius: 10px;
  margin: 0px auto 63px;
  background: #ffcc33;
  text-align: center;
  padding: 20px;
}
div.btn p {
  padding: 20px auto;
  font-weight: bold;
  font-size: 1em;
}
div.btn img {
    width: 200px;
    margin: 10px auto;
}
.red {
  color: #ff0000;
}

.bold {
  font-weight: 900;
}

/* imp info */
div.impinfo {
  max-width: 700px;
  margin: 40px auto;
  padding: 20px;
  border: 1px solid #000;
}

div.impinfo p.head {
  text-align: center;
  font-size: 1.7rem;
  font-weight: bold;
}

div.impinfo p {
    font-size: 14px;
    font-size: 1.4rem;
    line-height: 22px;
    letter-spacing: 0.05em;
    margin-bottom: 1.5em;}

div.impinfo p.sgn { text-align: center; }

div.impinfo p span { text-decoration: underline;}