section .event-announce-wrap {
  margin: 100px auto;
  max-width: 1016px;
  @media screen and (max-width: 768px) {
    margin: 0 auto;
  }
}

section .event-announce-wrap .event-announce-box {
  /*border: 1px solid black;*/

}

section .event-announce-wrap .event-announce-box img {
  width: 100%;
}