.offline-course {
  margin-top: 0.88rem;
  min-height: 13.6rem;
  background: linear-gradient(
    0, rgba(243, 245, 248, 1) 0%, 
    rgba(243, 245, 248, 0.73) 25.42%, 
    rgba(202, 12, 21, 1) 60%, 
    rgba(202, 12, 21, 1) 100%, 
    rgba(202, 12, 21, 1) 100%) 0 0/100% 13.5rem;
  background-repeat: no-repeat;
  background-clip: padding-box;
  object-fit: cover;
}
.class-title {
  display: inline-block;
  height: 1.58rem;
  margin-top: 1.54rem;
  padding: 0 0.42rem;
  border-radius: .3rem;
  background: rgba(243, 245, 248, .3);
  box-shadow: 0px .06rem .08rem  rgba(0, 0, 0, 0.25);
  font-size: .98rem;
  font-weight: 900;
  letter-spacing: 1px;
  line-height: 1.56rem;
  color: var(--light-color);
}
.class-top {
  display: flex;
  margin-top: .56rem;
  min-height: 7.77rem;
}
.class-top-left {
  margin-right: 1.5rem;
}
.class-sub-title {
  position: relative;
  margin-bottom: .2rem;
  font-size: .68rem;
  font-weight: 900;
  letter-spacing: .1rem;
  line-height: 1rem;
  color: var(--light-color);
}
.class-sub-title::after{
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 2.96rem;
  height: 0.03rem;
  background-color: #ff0000;
}
.class-brief {
  font-size: .48rem;
  font-weight: 400;
  letter-spacing: .1rem;
  line-height: .7rem;
  color: var(--secondary-color);
  white-space: pre-wrap;
  overflow-wrap: break-word;
}
.class-top-right {
  width: 5.86rem;
  height: 7.77rem;
  overflow: hidden;
  border-radius: .3rem;
  flex-shrink: 0;
  background-color: aliceblue;
}
.class-top-right img {
  width: 100%;
  height: 100%;
}
.class-content {
  /* min-height: 20rem; */
  margin-top: .5rem;
  margin-bottom: .8rem;
  /* border-radius: .3rem; */
  /* background: rgba(255, 255, 255, 1); */
  /* box-shadow: 0px 6px 8px  rgba(0, 0, 0, 0.25); */
}

.course-outline-box {
    margin: 30px auto 0;
    overflow: hidden;
    border-radius: 32px;
    background: rgba(255, 255, 255, 1);
    box-shadow: 0px 0px 10px 2px rgba(150, 156, 142, 0.1);
}
.course-outline-box-d {
    padding: 0 !important;
    margin: 15px auto;

}
.course-outline-box-d img {
    width: 100%;
}