.protocol-title  {
  color: rgba(51, 51, 51, 1);
  font-size: 18px;
  text-align: center;
  font-weight: 600;
  width: 100%;
  height: 44px;
  line-height: 44px;
}
.protocol-main {
  margin: 12px;
  font-size: 16px;
  color: rgba(51, 51, 51, 1);
}

.main-title {
  color: rgba(51, 51, 51, 1);
  font-size: 18px;
  margin: 20px auto;
  text-align: center;
}
.main {
  color: rgba(51, 51, 51, 1);
  font-size: 16px;
}