Cleaned up the main page to show the various controls and their states. Refactored the CSS a bit.

base.css

@@ -29,6 +29,7 @@ textarea, input {
 	font-size: var(--default-font-size);
 	font: inherit;
 	color: currentColor;
+	border-radius: 0.20em; /* Slightly round the edges */
 }
 
 .flex {
@@ -63,6 +64,17 @@ footer {
 	border: var(--default-border-style);
 }
 
+*:disabled, input:disabled {
+	/*
+		Note: The pointerenter and pointerleave events are fired when a pointing device is moved into an element or 
+		one of its descendants. So, even if pointer-events: none is set on the parent and not set on children, 
+		the events are triggered on the parent after the pointer is moved in or out of a descendant.
+
+		Source: https://developer.mozilla.org/en-US/docs/Web/CSS/pointer-events
+	*/
+	pointer-events: none;
+}
+
 /* Override default OS provided checkboxes and radio buttons */
 
 /* === CHECKBOX === */
@@ -74,9 +86,6 @@ input[type="checkbox"]:checked::before, input[type="radio"]:checked::before {
  	transform: scale(1);
 }
 
-input[type="checkbox"]:disabled, input[type="radio"]:disabled {
-	cursor: not-allowed;
-}
 /* TODO: These controls should probably have their sizes relative to their parent, so "em" instead of "rem" */
 /* Set the size and properties of the box that represents the checkbox */
 input[type=checkbox] {
@@ -85,7 +94,6 @@ input[type=checkbox] {
 	width: 1.15rem;
 	height: 1.15rem;
 	border: var(--default-border-style);
-	border-radius: 0.15em; /* Slightly round the edges */
 	/* Set the control to grid so the :before element is centered in the box, assuming the button is checked */
 	display: grid;
   	place-content: center;
@@ -116,7 +124,7 @@ input[type=checkbox]::before {
 /* === BEGIN RADIO BUTTON === */
 /* Set the size and properties of the circle that represents the radio button */
 input[type=radio] {
-	appearance: none; /* Hide the defualt OS provided control */
+	appearance: none; /* Hide the default OS provided control */
 	margin: 0; /* Not removed by appearance */
 	width: 1.65rem;
 	height: 1.65rem;