.college-banner {
  height: 100px;
  // background-image: url('https://julyedu-cdn.oss-cn-beijing.aliyuncs.com/college-plan/college-banner.png');
  background-image: url('https://julyedu-cdn.oss-cn-beijing.aliyuncs.com/college-plan/m-banner.png');
  background-size: cover;
}