how set style for checkbox code example

Example 1: custom checkbox in css

/* Custom CSS Checkbox */
<input type="checkbox">
<label>
  <span class="custom-checkbox"></span> my checkbox
</label>

[type="checkbox"] {
    opacity: 0;
    position: absolute;
}

.custom-checkbox {
    min-width: 0.75em;
    min-height: 0.75em;
    margin-right: 0.75em;
    border: 2px solid currentColor;
    border-radius: 50%;
    display: inline-block;
}

[type="checkbox"]:checked+label .custom-checkbox {
    border-color: blue;
    background: blue;
    box-shadow: inset 0 0 0 2px white;
}

Example 2: checkbox style css

<div>
		<label>Checkbox Small</label>
		<input type="checkbox" id="checkbox-1-1" class="regular-checkbox" />
		<nput type="checkbox" id="checkbox-1-2" class="regular-checkbox" />
		<input type="checkbox" id="checkbox-1-3" class="regular-checkbox" />
		<input type="checkbox" id="checkbox-1-4" class="regular-checkbox" />
	</div>
	<div>
		<label>Checkbox Big</label>
		<input type="checkbox" id="checkbox-2-1" class="regular-checkbox big-checkbox" />
		<input type="checkbox" id="checkbox-2-2" class="regular-checkbox big-checkbox" />
		<input type="checkbox" id="checkbox-2-3" class="regular-checkbox big-checkbox" />
		<input type="checkbox" id="checkbox-2-4" class="regular-checkbox big-checkbox" />
	</div>
	<div>
		<label>Radio Small</label>
		<div class="button-holder">
			<input type="radio" id="radio-1-1" name="radio-1-set" class="regular-radio" checked />
			<input type="radio" id="radio-1-2" name="radio-1-set" class="regular-radio" />
			<input type="radio" id="radio-1-3" name="radio-1-set" class="regular-radio" />
			<input type="radio" id="radio-1-4" name="radio-1-set" class="regular-radio" />
		</div>
	</div>
	<div>
		<label class="radio-1">Radio Big</label>
		<div class="button-holder">
			<input type="radio" id="radio-2-1" name="radio-2-set" class="regular-radio big-radio" />
			<input type="radio" id="radio-2-2" name="radio-2-set" class="regular-radio big-radio" />
			<input type="radio" id="radio-2-3" name="radio-2-set" class="regular-radio big-radio" checked />
			<input type="radio" id="radio-2-4" name="radio-2-set" class="regular-radio big-radio" />
			<input type="radio" id="radio-2-5" name="radio-2-set" class="regular-radio big-radio" />
		</div>
	</div>