HTML CSSResult Skip Results Iframe
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@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%;
}
*/

/* 背景用*/
/*
body {
  padding: 30px;
}
*/

.btn,
a.btn,
button.btn {
  font-size: clamp(1.2rem,7vw,2.5rem);
  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;
}

a.btn-3d-flip {
  display: block;
  max-width: clamp(280px,85vw,700px);
  margin: 3rem auto;
  padding: 0;
/*
  -webkit-perspective: 600px;
  perspective: 600px;
*/
}

a.btn-3d-flip:hover .btn-3d-flip-box {
  -webkit-transform: translateY(-50%) rotateX(90deg);
  transform: translateY(-50%) rotateX(90deg);
}

a.btn-3d-flip.btn-3d-flip2:hover .btn-3d-flip-box2 {
  -webkit-transform: translateX(-50%) rotateY(-90deg);
  transform: translateX(-50%) rotateY(-90deg);
}

.btn-3d-flip-box {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  margin: auto;

  -webkit-transition: all 0.4s;

  transition: all 0.4s;
  -webkit-transform: rotateX(0);
  transform: rotateX(0);
  text-decoration: none;
  text-transform: uppercase;

  color: #fff;

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

  transform-style: preserve-3d;
}

.btn-3d-flip-box2 {
  position: relative;

  display: block;

  width: 100%;
  height: 100%;
  margin: auto;

  -webkit-transition: all 0.4s;

  transition: all 0.4s;
  -webkit-transform: rotateY(0);
  transform: rotateY(0);
  text-decoration: none;
  text-transform: uppercase;

  color: #fff;

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

  transform-style: preserve-3d;
}

.btn-3d-flip-box-face {
  display: block;
  position: relative;

  width: 100%;
  padding: 1.5rem 0;

  -webkit-transition: all 0.4s;

  transition: all 0.4s;

  color: #fff;

  -webkit-backface-visibility: hidden;

  backface-visibility: hidden;
}

.btn-3d-flip-box-face--front {
  background: #eb6100;
}

.btn-3d-flip-box-face--back {
  position: absolute;
  top: 100%;
  left: 0;

  -webkit-transform: translateY(-1px) rotateX(-90deg);

  transform: translateY(-1px) rotateX(-90deg);
  -webkit-transform-origin: 50% 0;
  transform-origin: 50% 0;

  background: #dc5b00;
}

.btn-3d-flip-box-face--front2 {
  color: #000;
  border: 2px solid #000;
  /*background: #fff;*/
}

.btn-3d-flip-box-face--back2 {
  position: absolute;
  top: 0;
  left: 100%;

  -webkit-transform: translateX(-1px) rotateY(90deg);

  transform: translateX(-1px) rotateY(90deg);
  -webkit-transform-origin: 0 0;
  transform-origin: 0 0;

  color: #fff;
  border: 2px solid #790100;
  background: #790100;
}

.fa-position-right {
  position: absolute;
  top: calc(50% - 0.5em);
  right: 1rem;
}