html,body {
  margin:0;
  padding:0;
}

.wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.titlebanner {
  width: 80%;
}

.titlebanner img {
  width: 100%;
  height: auto;
  display: block;
}

.imgbox {
  width: 80%;
  height: auto;
  display: flex;
  flex-wrap: wrap;
  flex-justify-content: center;
  padding-top: 10px;
}

.imgbox img {
  width: 100%;
  display: block;
}

.imgbox-inner {
  width: 50%;
  height: auto;
}

@media (max-width: 768px) {
  .imgbox {
    width: 100%;
    justify-content: center;
    height: auto;
  }
  .titlebanner {
    width: 100%;
  }
  .imgbox-inner {
    width: 95%;
    height: auto;
  }
}