.whitecheck {
  color: #fff;
}
.blackbut {
  background: #000 !important;
  width: 250px;
  margin: 0 auto;
  display: block;
}
.error-message, .phone-error, .name-error {
  color: red;
  background: #ffd383;
  padding: 2px 5px;
  display: none; /* Hide by default */
}

.dmtform > .invalid {
  border-color: red !important;
  margin-bottom: 0.5em;
}
.dmtform > input {
  margin-bottom: 0.3em !important;
}
.phone-number {
  text-align: right;
}
.wpcf7-response-output {
  border-color: #1f6625;
  background: #1f6625;
  font-size: 18px;
  color: #fff;
}

.success-message {
    background: green; /* Or any other styling you prefer */
    color:#fff;
}