* {
  margin: 0;
  padding: 0;
}
.containers h2 {
  /* width: 80%; */
  text-align: center;
}
body {
  background-color: #fff;
  position: relative;
}
.containers {
  position: relative;
}
.containers .title {
  min-height: 2.1875rem;
  background-color: #000000;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 20;
  font-size: 18px;
}
.containers .title div {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.containers  .title div img {
  width: 2rem;
  height: 2rem;
  margin-left: 0.5rem;
}
.containers  .title .imp {
  font-size: 1.2rem;
  color: #ccff33;
  margin: 0;
}

/* 导航栏 */
.navList {
  font-size: 1rem;
  font-weight: bold;
  background: #fff;
  position: sticky;
  top: 2.5rem;
  z-index: 20;
}
.navbar-light .navbar-nav .nav-link {
  color: #000;
}
.navbar-light .navbar-nav .nav-link:hover {
  color: #80b018;
}
 .custom-h2 {
    font-size: 1.2rem;
    text-align: center!important;
    width: 100%;
 }
 .card h2 {
    width: 100%;
    font-size: 20px;
    margin-top: 20px;
 }