*,
*:before,
*:after {
  -webkit-box-sizing: inherit;
  box-sizing: inherit;
}

html {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  font-size: 62.5%;
}

.btn,
a.btn,
button.btn {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.5;
  position: relative;
  display: inline-block;
  padding: 1rem 4rem;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  text-align: center;
  vertical-align: middle;
  text-decoration: none;
  letter-spacing: 0.1em;
  color: #212529;
  border-radius: 0.5rem;
}

/*”wŒi*/
.btn-wrap {
  margin: 20px;
}

a.btn-c {
  font-size: 2rem;

  position: relative;

  padding: 1.5rem 4rem 1.5rem 6rem;

  color: #000;
  border: 2px solid #000;
  border-radius: 100vh;
  background: #fff100;
  -webkit-box-shadow: 0 5px 0 #e6d900;
  box-shadow: 0 5px 0 #e6d900;
}

a.btn-c span {
  font-size: 1.3rem;
  line-height: 1.3;

  position: absolute;
  top: -10px;
  left: -20px;

  width: 64px;
  height: 64px;
  padding-top: 15px;

  -webkit-transition: all 0.3s;

  transition: all 0.3s;

  color: #000;
  border: 2px solid #000;
  border-radius: 50%;
  background: #fff;
}

a.btn-c span em {
  font-style: normal;

  color: #d20010;
}

a.btn-c small {
  font-weight: bold;
}

a.btn-c i {
  margin-right: 1rem;
}

a.btn-c:hover {
  -webkit-transform: translate(0, 3px);
  transform: translate(0, 3px);

  color: #000;
  background: #fff21a;
  -webkit-box-shadow: 0 2px 0 #e6d900;
  box-shadow: 0 2px 0 #e6d900;
}

a.btn-c:hover span {
  -webkit-transform: translate(0, -5px);
  transform: translate(0, -5px);
}