#wrap {
  flex-direction: column;
}

.sub_tit {
  position: initial;
  color: #2e53a0;
  margin-bottom: 50px;
}

.sub_tit hr {
  border-bottom: 2px solid #2e53a0;
  width: 20%;
  margin: 0 auto;
  margin-top: 10px;
}

/* banner */
.sub_big_banner {
  background: url(../images/history_perform_down_contact/banner_download.png) no-repeat center top / cover;
}

.sub_tit_big h2 {
  margin: 30px 0;
}

.sub_tit_big span {
  margin: 5px 0;
}

/* down */

.down {
  padding: 10% 0;
}

.down .container {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.down .container > div {
  width: 50%;
  border-radius: 20px;
  padding: 10% 5%;
  box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.down .container h2 {
  margin: 10px 0;
}

.down .container p {
  display: list-item;
  list-style-type: disc;
  margin-left: 20px;
  margin-top: 10px;
}

.down .container .right p:nth-last-child(2) {
  list-style-type: none;
}

.down .container span {
  font-weight: 800;
  margin-top: 3%;
}

.down .btns {
  width: 100%;
  margin-top: 20px;
}
.down button {
  padding: 0 5%;
  margin-right: 1%;
}

.left {
  background: #d7e2ff;
  color: #1f284d;
}

.left .btns a {
  color: #fff;
  font-weight: 700;
}

.right {
  background: #2e53a0;
  color: #fff;
}

.right .btns a {
  color: #2e53a0;
  font-weight: 700;
}

/* bottom_banner */
.bottom_banner {
  width: 100%;
  position: relative;
}

.bottom_banner img {
  width: 100%;
  height: auto;
}

.bottom_banner button {
  position: absolute;
  top: 70%;
  left: 32%;
  padding: 0px 2%;
  height: 40px;
}

@media all and (max-width: 1440px) {
  .down .container h4 {
    font-size: 24px;
  }

  .down button {
    padding: 0 3%;
  }

  /* bottom_banner */
  .bottom_banner button {
    padding: 0px 2%;
    height: 30px;
  }
}

@media all and (max-width: 1024px) {
  .down .container > div {
    padding: 5%;
  }

  .btns {
    display: flex;
    flex-direction: column;
  }

  .btns button {
    width: 100%;
    margin-bottom: 10px;
  }
}

@media all and (max-width: 960px) {
  .br_1280 {
    display: none;
  }

  .sub_tit hr {
    display: none;
  }

  .down .container {
    flex-direction: column;
  }

  .down .container > div {
    width: 100%;
  }

  .right {
    margin-top: 20px;
  }

  .btns {
    flex-direction: row;
  }

  .btns button {
    width: 33%;
    margin-bottom: 0px;
  }
}

@media all and (max-width: 768px) {
  .br_1280 {
    display: inline-block;
  }

  /* banner */
  .sub_tit_big h2 {
    margin: 20px 0;
  }

  /* down */
  .down .container h2 {
    margin: 20px 0;
  }

  .down .container .right p:nth-last-child(2) {
    display: none;
  }

  .btns {
    flex-direction: column;
  }

  .btns button {
    width: 100%;
    margin-bottom: 10px;
  }

  /* bottom_banner */
  .bottom_banner {
    width: 100%;
    height: 200px;
    overflow: hidden;
    display: flex;
    flex-direction: row;
    justify-content: center;
  }

  .bottom_banner img {
    width: auto;
    height: 100%;
  }

  .bottom_banner button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-110%, 150%);
    width: 130px;
    height: 22px;
    font-size: 14px;
  }
}

@media all and (max-width: 480px) {
  /* banner */
  .sub_tit_big h2 {
    margin: 10px 0;
    font-size: 24px;
  }

  .sub_tit {
    margin-bottom: 30px;
  }

  /* down */
  .down .container h4 {
    display: none;
  }
}