@media screen and (max-width:500px){
  .wrap {padding-top:2.8rem;}
  .sign__ {margin:2rem auto 4rem;}
  .sign__ > .title h2 {font-size:1.7rem;line-height:1.8rem;}
  .sign_form .sign > small {font-size:0.6rem;letter-spacing:-0.19px;}
  .service .flex.all span {font-size:0.75rem;letter-spacing:-0.23px;}
  .service .flex.a1 span, .service .flex.a2 span {font-size:0.7rem;letter-spacing:-0.22px;}
  .join {padding:0.95rem 0; max-height:2.8rem;margin-top:2.4rem;}
  .join span {font-size:0.75rem;letter-spacing:-0.23px;}
}