html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

.content-wrapper {
  flex: 1 0 auto;
}


.content-wrapper {
  width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.content-wrapper > h2 {
  margin-top: 44px;
  margin-bottom: 8px;
  font-size: 30px;
  font-weight: 600;
  color: #333;
}

.content-wrapper > h5 {
  margin-bottom: 46px;
  font-weight: 400;
  font-size: 16px;
  color: #333333;
}

.content-wrapper .course-wrapper {
  margin-bottom: 42px;
  display: flex;
  width: 100%;
  flex-wrap: wrap;
}

.course-wrapper .cource-item {
  position: relative;
  width: 380px;
  height: 180px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0 18px;
  border: 3px solid transparent;
  background-color: #333;
  cursor: pointer;
  box-sizing: border-box;
  margin-bottom: 20px;
  margin-right: 20px;
  overflow: hidden;
}

.course-wrapper .cource-item .play {
  width: 28px;
  height: 28px;
  position: absolute;
  bottom: 15px;
  right: 15px;
}

.course-wrapper .cource-item:nth-child(3n) {
  margin-right: 0;
}

.course-wrapper .cource-item.active {
  border-color: #2288FC;
}

.course-wrapper .cource-item.active::before {
  content: '匹配行业';
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  padding: 4px 7px;
  font-size: 12px;
  color: #FFFFFF;
  background-color: #2288FC;
  border-bottom-right-radius: 20% 80%;
}

.course-wrapper .cource-item .cource-title {
  font-weight: 500;
  font-size: 22px;
  color: #ffffff;
  margin-bottom: 16px;
}

.course-wrapper .cource-item .cource-desc {
  font-weight: 400;
  font-size: 14px;
  color: #ffffff;
  width: 100%;
}