.lesson-btn-box {
  padding: 40px;
  border: 2px solid var(--color_main);
  border-radius: 6px;
}

.lesson-btn-box__title {
  font-size: 20px;
  font-weight: bold;
  text-align: center;
}

.lesson-btn-box .btn-wrap {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
}

.lesson-btn-box button {
  width: 48%;
  padding: 1.2em 0;
  transition: all .3s ease-out;
  color: #fff;
}

.lesson-btn-box button:hover {
  opacity: .8;
}

.lesson-btn-box .complete-btn {
  background: var(--color_main);
}

.lesson-btn-box .complete-btn.btn_comp_design {
  background: #aaa;
}

.lesson-btn-box .next-btn {
  background: #ef8383;
}

@media (max-width: 570px) {
  .lesson-btn-box__title {
    font-size: 18px;
  }

  .lesson-btn-box {
    padding: 20px;
  }

  .lesson-btn-box .btn-wrap {
    margin-top: 24px;
  }

  .lesson-btn-box button {
    font-size: 14px;
    padding: .5em 0;
  }
}