body {
  overflow: hidden;
}

*,
*::after,
*::before {
  box-sizing: border-box;
}

body {
  margin: 0px;
}

html,
body {
  height: 100%;
  width: 100%;
}

.xwu-error-block {
  display: none;
  /* `color: gray` is important for readability because OCMP preview & Xibo display usually have either black or white background */
  color: gray;
  overflow: auto;
  font-weight: bold;
  font-size: 16px;
  letter-spacing: 0.5px;
  margin: 0;
}

.xwu-error-block:not(:empty) {
  display: flex;
}