@import "https://use.fontawesome.com/releases/v5.13.0/css/all.css";

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

html {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  font-size: 62.5%;
  font-family: "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", Meiryo,
    メイリオ, YuGothic, "游ゴシック sans-serif";
}

.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;
}

/*ボタン周りの余白用*/
.btn-wrap {
  margin: 15px;
}

a.btn-coupon {
  line-height: 1.2;

  display: -webkit-box;

  display: -ms-flexbox;

  display: flex;

  width: 400px;
  height: 120px;
  margin: 0 auto;
  padding: 0;
}

a.btn-coupon .left {
  width: 80%;
  padding-top: 20px;

  -webkit-transition: all 0.6s;

  transition: all 0.6s;
  -webkit-transform-origin: top left;
  transform-origin: top left;

  border: 2px solid #e94919;
  border-right: 0;
  background: #fff;

  -webkit-transform-style: preserve-3d;

  transform-style: preserve-3d;
}

a.btn-coupon .left span {
  font-size: 1rem;
}

a.btn-coupon .left span.txt1 {
  font-size: 1.5rem;

  color: #e94919;
}

a.btn-coupon .left em {
  font-size: 3.5rem;
  font-style: normal;

  display: block;

  color: #e94919;
}

a.btn-coupon .right {
  position: relative;

  width: 20%;
  height: 100%;

  -webkit-transition: all 0.6s;

  transition: all 0.6s;
  -webkit-transform-origin: top left;
  transform-origin: top left;

  color: #fff;
  border-left: 2px dotted #fff;
  background: #e94919;

  -webkit-transform-style: preserve-3d;

  transform-style: preserve-3d;
}

a.btn-coupon .right span {
  font-size: 3rem;
  line-height: 1;

  position: absolute;
  top: -0.8rem;
  left: calc(50% - 0.8rem);

  display: inline-block;

  -webkit-transform: rotate(90deg);

  transform: rotate(90deg);
  -webkit-transform-origin: bottom left;
  transform-origin: bottom left;
}

a.btn-coupon:hover .left {
  -webkit-transform: rotateX(-20deg);
  transform: rotateX(-20deg);
}

a.btn-coupon:hover .right {
  -webkit-transform: rotateX(-20deg) rotateY(75deg);
  transform: rotateX(-20deg) rotateY(75deg);
}