.hidden {
  display: none;
  visibility: hidden;
  height: 0;
}

.attention {
  border: 3px solid red;
  padding: 20px;
  border-radius: 20px;
  background: rgba(150, 0, 0, 0.7);
  color: white;
  color: rgba(255, 255, 255, 0.9);
  font-size: small;
}
.attention .big {
  font-size: medium;
  color: white;
}
.attention h2, .attention h3, .attention h4 {
  color: red;
}

.btn {
  vertical-align: top;
  font-size: large;
  padding: 15px 25px;
  border-radius: 25px;
  transition: all 1s ease-in-out;
  background: rgb(29, 62, 92);
  color: white;
  box-shadow: 0 0 3px #03e9f4, 0 0 5px #03e9f4, 0 0 10px #03e9f4, 0 0 20px #03e9f4;
  margin-bottom: 25px;
}
.btn:hover {
  background: rgb(79, 121, 141);
  box-shadow: 0 0 5px #03e9f4, 0 0 10px #03e9f4, 0 0 20px #03e9f4, 0 0 50px #03e9f4;
}/*# sourceMappingURL=common.css.map */