#aboutpoker {
  background-attachment: fixed;
  background-image: url("../img/up.jpg");
  background-size: cover;

  padding: 40px 20px;
}
#aboutpoker > .container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 60px 80px 60px;
  background-color: #fff;
  border-radius: 30px;
}
#aboutpoker > .container > .title {
  text-align: center;
}
#aboutpoker > .container > .title > h2 {
  margin-bottom: 20px;
  font-size: 1.6em;
  border-bottom: 2px solid #ff4040;
  padding-bottom: 5px;
  display: inline-block;
}
#aboutpoker p {
  margin-bottom: 15px;
}
#aboutpoker img {
  display: block;
  margin: 20px auto 20px;
  width: min(80vw, 640px);
  height: min(50vw, 400px);
  background-color: #ccc;
}


/* SP */
@media screen and (max-width: 500px) {
  #aboutpoker > .container{
    padding-left: 20px;
    padding-right: 20px;
  }
}