html,
body{
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: auto;
  overflow-x: hidden;
  background-color: #fff;
}

* {
  padding: 0;
  margin: 0;
  text-decoration: none;
  list-style: none;
  box-sizing: border-box;
  color: #333;
}

/* 大屏幕 */
@media screen and (min-width: 1920px) {
  .public {
    width: 1920px;
  }
}

/* 中屏幕 */
@media screen and (min-width: 1025px) and (max-width: 1550px) {
  .public {
    width: 100%;
  }
}

/* 移动 */
@media screen and (max-width: 767px) {
  .public {
    width: 100%;
  }
}
/* pad */
@media screen and (min-width: 768px) and (max-width: 1024px) {
  .public {
    width: 100%;
  }
}