html {
  font-size: 16px;
  height: 100%;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background-color: #fafbfc;
  color: #333;

  /* 新增 */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-content {
  flex: 1;
}


/* 头部 */
header {
  width: 100%;
  background: #ffffff;
  box-shadow: 0 2px 4px 0 #cccccc;
}
.header {
  width: 80rem;
  height: 5rem;
  margin: 0 auto;
  background: #ffffff;
  display: flex;
  position: relative;
}
.logo {
  position: relative;
  height: 5rem;
}
.logo a {
  text-decoration: none;
  color: black;
}
.logo h1 {
  margin-left: 40px;
  margin-top: 12px;
}
.logo img {
  width: 32px;
  height: 32px;
  position: absolute;
  top: 1.125rem;
}
/* 头部end */


/* 底部 Footer 最终正常版 */
footer {
  height: 48px;
  line-height: 48px;
  background: #021f33;
  text-align: center;
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #ffffff;
}

footer span {
  opacity: 0.9;
}