html,
body {
  min-height: 100%;
  margin: 0;
  padding: 0;
  font-size: 14px;
  font-family: "PingFang SC", "Microsoft YaHei", "微软雅黑", "宋体",
  "sans-serif";
  line-height: 1.5;
  --color-primary: #101010;
  --color-light: #4f4f4f;
  --color-bright: #b4fdff;
  color: var(--color-primary);
}
ul,
ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

.maincontainer {
  height: 100%;
}
.header {
  height: 71px;
  background-color: var(--color-bright);
  display: flex;
  align-items: center;
}
.header .logo {
  height: 100%;
}
.header .logo img {
  height: 100%;
}
.header a {
  font-size: 18px;
  font-weight: 500;
  margin-left: 0.3rem;
}

.footer {
  height: 71px;
  background-color: var(--color-primary);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  color: #fff;
  padding: 0 0.3rem;
}
/* 适用于所有移动设备 */
@media only screen and (max-device-width: 768px) {
  /* 在这里编写适用于移动设备的 CSS */
  .header {
    height: 44px;
  }
}

a.no-style {
  color: inherit;
  text-decoration: none;
  cursor: pointer; /* 就是这行保留了“小手” */
}

.header a.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: #007bff;
}