.container {
  margin: 0rpx 30rpx;
  width: calc(100% - 60rpx);
  /* height: calc(100vh - 40rpx); */
  padding: 0 0;
}

.empty-space {
  width: 100%;
  height: 390rpx;
  background-color: #e0e0e0;
  margin-top: 20rpx;
  border-radius: 12rpx;
}

.course-buttons {
  width: 100%;
  display: flex;
  margin-top: 20rpx;
}

.course-button1 {
  width: 47%;
  height: 350rpx;
  background-color: #e0e0e0;
  margin: 5rpx;
  border-radius: 12rpx;
  color: #fff;
}

.course-buttonstow {
  margin-left: 20rpx;
  width: calc( 100% - 47% - 20rpx);
  height: 350rpx;
  color: #fff;
}

.course-button2 {
  width: 100%;
  height: calc(50% - 10rpx);
  background-color: #e0e0e0;
  margin: 5rpx;
  border-radius: 12rpx;
}

.course-button3 {
  margin-top: 20rpx;
  width: 100%;
  height: calc(50% - 10rpx);
  display: flex;
}

.course-button {
  width: calc(50% - 10rpx);
  height: 100%;
  background-color: #e0e0e0;
  margin: 5rpx;
  border-radius: 12rpx;
}

.nr_boxs {
  display: flex;
  flex-direction: column;
  padding: 20rpx;
}