seahub/frontend/src/css/publish-wiki-dialog.css

.publish-wiki-custom-url-inputs .input-pretext {
  position: absolute;
  left: 12px;
  top: 0;
  height: 38px;
  line-height: 38px;
  z-index: 1;
  color: #666;
}

.publish-wiki-custom-url-inputs .publish-wiki-custom-url-input {
  background-color: transparent;
  border-radius: 4px 0 0 4px !important;
  border-right: none;
}

.publish-wiki-custom-url-inputs .input-group-text {
  padding: 0;
  border: none;
}

.publish-wiki-custom-url-inputs .input-group-text .btn {
  border-radius: 0 4px 4px 0;
  height: 38px;
}