table.php-source {
  width: 100%; border-collapse: collapse; border: thin solid;
  th { text-align: right; padding: 0 1.5em 0 0 }
  td { width: stretch }
}

.php-comment { color: #f80 }
.php-default { color: #00b }
.php-html { color: #000 }
.php-keyword { color: #070 }
.php-string { color: #d00 }
.php-target { background: #fcc }

@media (prefers-color-scheme: dark) { 
  .php-comment { color: #ec0 }
  .php-default { color: #3cf }
  .php-html { color: #ccc }
  .php-keyword { color: #0f3 }
  .php-string { color: #f39 }
  .php-target { background: #600 }
}