body {
  background-color: #0000;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  padding: 0;
  display: flex;
  overflow: hidden;
}

.btn__txt-0045 {
  color: #2a3239;
  text-align: center;
  letter-spacing: 1px;
  text-transform: uppercase;
  flex: none;
  justify-content: center;
  align-self: center;
  align-items: center;
  font-family: Bitter, serif;
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  display: inline-block;
  position: relative;
}

.txt-0045__wrap {
  justify-content: center;
  align-items: center;
  display: flex;
}

.txt-0045__label {
  color: #00f;
}

.txt-0045__label--2nd {
  color: #f0f;
}

.txt-0045__label--3rd {
  color: red;
}