.lesson_example {
  margin: 18px 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
}

.lesson_trainer {
  margin: 20px 0 28px;
  padding: 22px 16px;
  border: 1px solid #c5c5c5;
  border-radius: 8px;
  text-align: center;
}

body.dark .lesson_trainer { border-color: #3a3f47; }

.lesson_task {
  min-height: 26px;
  font-size: 20px;
  font-weight: 500;
  opacity: 0.7;
}

.lesson_feedback {
  min-height: 30px;
  margin-top: 14px;
  font-size: 17px;
  font-weight: 500;
}

.lesson_ok { color: #1a7f37; }
.lesson_bad { color: #c02626; }
body.dark .lesson_ok { color: #4ac26b; }
body.dark .lesson_bad { color: #ff6b6b; }

.lesson_summary { font-size: 21px; font-weight: 700; }

.lesson_progress {
  margin-top: 6px;
  font-size: 14px;
  opacity: 0.65;
}

.lesson_again {
  margin-top: 16px;
  cursor: pointer;
}

.lesson_heading {
  margin-top: 40px;
  font-size: 19px;
}

.lesson_group {
  margin: 20px 0 0;
  font-size: 17px;
}

.lesson_others {
  margin: 8px 0 24px;
  padding-left: 22px;
}

.lesson_others li { margin-bottom: 10px; }

.lesson_others a { display: block; }

.lesson_others a:hover { text-decoration: none; }

.lesson_others a:hover b { text-decoration: underline; }

.lesson_others span { display: block; }

.lesson_current { opacity: 0.55; }

@media (max-width: 520px) {
  .lesson_example {
    font-size: 19px;
    letter-spacing: 1px;
  }
}