.header,.footer {
  display: none;
}
.brSp {
  display: none;
}
.brPc {
  display: inline;
}

@media only screen and (max-width: 735px) {
  .brSp {
    display: inline;
  }
  .brPc {
    display: none;
  }

  .word-break{
    word-break: break-all;
  }
}