/*ベース*/
/*まずはお決まりのボックスサイズ算出をborer-boxに */
*,
*:before,
*:after {
  -webkit-box-sizing: inherit;
  box-sizing: inherit;
}

html {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  font-size: 62.5%;
}
.btn{
    text-align: center;
}
.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;
}
/*ベース*/

/*その他と主な共通部分は省略*/
a.btn--green {
    color: #fff;
    background-color: #094;
  }
  
  a.btn--green:hover {
    color: #fff;
    background: #00a349;
  }
  
  a.btn--green.btn--cubic {
    border-bottom: 5px solid #00662d;
  }
  
  a.btn--green.btn--cubic:hover {
    margin-top: 3px;
    border-bottom: 2px solid #00662d;
  }
  
  a.btn-c {
    font-size: 2rem;
    position: relative;
    padding: 1.5rem 3rem 1.5rem 2rem;
    border-radius: 100vh;
  }
  
  a.btn-c i.fa {
    margin-right: 1rem;
  }