body {
  background-color: transparent;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  display: flex;
}

.btn__und-0120 {
  color: #2a3239;
  text-align: center;
  letter-spacing: 1px;
  text-transform: uppercase;
  flex: none;
  align-self: center;
  font-family: Changa One, Impact, sans-serif;
  font-size: 34px;
  font-weight: 400;
  line-height: 1;
  text-decoration: none;
  display: inline-block;
  position: relative;
}

.und-0120__line {
  background-color: #00f;
  width: 100%;
  height: 10px;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
}

.und-0120__label {
  padding-bottom: 15px;
}