/* ボタン */
.c-btn {
  max-width: 540px;
  width: 81%;
  margin: 0 auto;
  filter: drop-shadow(0px 6px 3px rgba(0, 0, 0, 0.18));
  -webkit-transition: 0.3s all;
  transition: 0.3s all;
}
.c-btn:hover{
    cursor: pointer;
  opacity: 0.6;
  transition: 0.3s all;
}
.l .c-btn {
  max-width: 360px;
  width: 100%;
}

/* セクション */
.c-sec {
  padding: 20% 4.8% 16%;
}
.l .c-sec {
  max-width: 760px;
  margin: 0 auto;
  padding: 148px 20px 100px;
}