Vulcan/packages/telescope-theme-base/lib/client/scss/specific/_errors.scss

.error, .at-error{
  background: $red;
  @extend .grid-block;
  margin-bottom:$grid-margin;
  text-align:center;
  color:white;
  padding: 20px;
  a{
    &:link, &:hover{
      color: white;
    }
  }
}