กำหนดสไตล์ให้กับ input checkbox & radio

/*
CSS custom checkbox & radio control was copied from Bootstrap 5.
*/
input[type="checkbox"],
input[type="radio"] {
  appearance: none;
  background-color: #fff;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  border: 1px solid #ccc;
  height: 1em;
  width: 1em;
}
input[type="radio"] {
  border-radius: 50%;
}

/*
checkbox & radio icon using base 64.
base 64 tool: https://www.base64encode.org/
icons tool: https://www.iconfinder.com
*/
input[type="checkbox"]:checked {
  background-image: url("data:image/svg+xml;base64,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");
}
input[type="radio"]:checked {
  background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTAiIGhlaWdodD0iNTAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+CgogPGc+CiAgPHRpdGxlPmJhY2tncm91bmQ8L3RpdGxlPgogIDxyZWN0IGZpbGw9Im5vbmUiIGlkPSJjYW52YXNfYmFja2dyb3VuZCIgaGVpZ2h0PSI0MDIiIHdpZHRoPSI1ODIiIHk9Ii0xIiB4PSItMSIvPgogPC9nPgogPGc+CiAgPHRpdGxlPkxheWVyIDE8L3RpdGxlPgogIDxlbGxpcHNlIHJ5PSIxNy4yMTkwMzgiIHJ4PSIxNy4yMTkwMzgiIGlkPSJzdmdfMyIgY3k9IjI0Ljk5OTk5OSIgY3g9IjI1LjAwMDAwMyIgc3Ryb2tlLXdpZHRoPSIxMiIgc3Ryb2tlPSIjMDA1ZmJmIiBmaWxsPSJub25lIi8+CiA8L2c+Cjwvc3ZnPg==");
}
input[type="checkbox"]:checked[disabled],
input[type="radio"]:checked[disabled] {
  opacity: .5;
}