.sti-chat .sti-chat-contact:not([hidden]) {
  border: 2px solid #1f5286;
  border-radius: 10px;
  padding: 12px;
  background: #f3f8ff;
  margin-block: 10px;
  box-sizing: border-box;
  max-width: 100%;
}
.sti-chat .sti-chat-contact-form input:not([type="checkbox"]) {
  box-sizing: border-box;
  max-width: 100%;
}
.sti-chat .sti-callback-request {
  display: block;
  margin-top: 8px;
  padding: 8px 12px;
  border: 0;
  border-radius: 6px;
  color: white;
  background: #153f6b;
  cursor: pointer;
}
.sti-chat .sti-callback-request:disabled { opacity: .7; cursor: default; }