breakpoints.css

	
		
		html::before {
  content: '';
  position: fixed;
  top: 0;
  right: 0;
  background: #000;
  color: #fff;
  font-size: 14px;
  padding: 2px 6px;
  z-index: 9999;
}

/* SMALL: 0–480px */
@media (max-width: 480px) {
  html {
    border: 4px solid #e74c3c; /* rot */
  }
  html::before {
    content: 'SMALL';
    background: #e74c3c;
  }
}

/* MEDIUM: 481–768px */
@media (min-width: 481px) and (max-width: 768px) {
  html {
    border: 4px solid #3498db; /* blau */
  }
  html::before {
    content: 'MEDIUM';
    background: #3498db;
  }
}

/* LARGE: 769–992px */
@media (min-width: 769px) and (max-width: 992px) {
  html {
    border: 4px solid #2ecc71; /* grün */
  }
  html::before {
    content: 'LARGE';
    background: #2ecc71;
  }
}

/* XL: >992px */
@media (min-width: 993px) {
  html {
    border: 4px solid #f1c40f; /* gelb */
  }
  html::before {
    content: 'XL';
    background: #f1c40f;
    color: #000;
  }
}