.btn {
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
  line-height: 46px;
  padding: 0 39px;
  font-size: 16px;
  text-decoration: none;
  border-radius: 40px;
}
.btn.blue {
  color: #fff;
  background-color: #1f90cc;
}
.btn.orange {
  color: #fff;
  background-color: #ff8821;
}
.btn:hover:not([disabled]) {
  box-shadow: 0 1px 10px 0 rgba(0, 0, 0, 0.5);
}
.btn[disabled] {
  filter: grayscale(50%);
  cursor: auto;
}
.btn.loading {
  padding-right: 59px;
  filter: grayscale(50%);
}
.btn.loading:before {
  content: "";
  box-sizing: border-box;
  position: absolute;
  top: 13px;
  right: 20px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid #fff;
  border-top-color: #1f90cc;
  animation: a 0.6s linear infinite;
}

.clickable {
  cursor: pointer;
}