.headline__title {
  text-align: center;
}

.headline__title .jp {
  font-size: 2rem;
  font-weight: bold;
}

.headline__title .en {
  font-family: "Poppins", sans-serif;
  font-size: 3.6rem;
  font-weight: bold;
}

.headline__title + .lead {
  text-align: center;
  font-size: 1.8rem;
  padding: 20px 0 40px;
}

.second__title .jp {
  font-size: 2.4rem;
  font-weight: bold;
}

.second__title .en {
  font-family: "Poppins", sans-serif;
  font-size: 1.6rem;
  font-weight: bold;
}

.btn a {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
  align-items: center;
  transition: 400ms;
  width: 100%;
  max-width: 260px;
  min-height: 60px;
  background: #000;
  color: #fff;
  padding: 10px 40px;
  font-size: 1.8rem;
  font-weight: bold;
  margin-left: auto;
  margin-right: auto;
  border: #000 1px solid;
  border-radius: 10px;
}

@media only screen and (min-width: 768px) {
  .btn a:hover {
    background: #fff;
    color: #000;
  }
}

.btn a::after {
  content: "";
  display: inline-block;
  width: 20px;
  height: 20px;
  background-image: url("https://via.placeholder.com/700x500/CCC/FFFFFF/?text=aaaaa");
  background-repeat: no-repeat;
  background-position: 50% 50%;
  background-size: 20px;
  margin-left: 20px;
}

.btn-b a {
  display: flex;
  flex-flow: row wrap;
  justify-content: center;
  align-items: center;
  transition: 400ms;
  width: 100%;
  max-width: 260px;
  min-height: 60px;
  background: linear-gradient(to right, #46A3FF, #00E2FB);
  color: #fff;
  padding: 10px 40px;
  font-size: 2.4rem;
  font-weight: bold;
  margin-left: auto;
  margin-right: auto;
  border-radius: 50px;
  padding-right: 10px;
}

@media only screen and (min-width: 768px) {
  .btn-b a:hover {
    background: linear-gradient(to right, #46A3FF, #00E2FB);
    color: #fff;
    opacity: 0.7;
  }
}

.btn-b a::after {
  content: "";
  display: inline-block;
  width: 40px;
  height: 40px;
  background-image: url("https://static.thenounproject.com/png/1480285-200.png");
  background-repeat: no-repeat;
  background-position: 50% 50%;
  background-size: 30px;
  margin-left: 20px;
}