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HTML

            
              <p>Faking dropdown select, using input radio.</p>
<div class="dropp">
  <div class="dropp-header">
    <span class="dropp-header__title js-value">Choose an option</span>
    <a href="#" class="dropp-header__btn js-dropp-action"><i class="icon"></i></a>
  </div>
  <div class="dropp-body">
    <label for="optA">Option A<input type="radio" id="optA" name="dropp" value="Option A"/></label>
    <label for="optB">Option B<input type="radio" id="optB" name="dropp" value="Option B"/></label>
    <label for="optC">Option C<input type="radio" id="optC" name="dropp" value="Option C"/></label>
    <label for="optD">Option D<input type="radio" id="optD" name="dropp" value="Option D"/></label>
  </div>
</div>
<p>Update: See <a href="https://codepen.io/syndicatefx/pen/LVEbNR" target="_blank">version 2</a></p>
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CSS

            
              @import bourbon

@import url(https://fonts.googleapis.com/css?family=Varela+Round)
html 
	box-sizing: border-box

*, *:before, *:after 
	box-sizing: inherit

html
	background: #181818
	overflow-y: scroll
body
	font: 1em/1.6 "Varela Round", Arial, sans-serif
	color: #999
	font-weight: 400
	max-width: 25em 
	padding: 1em
	margin: 10% auto


.icon
	display: block
	position: relative
	width: 1.5em 
	height: 1.5em
	margin: 0 auto

	&:before,&:after 
		content: ""
		position: absolute

// Dropp styles

$bgColor: #242424
$trimColor: #dd4040
$textColor: #fff 


.dropp 
	width: 100%
	box-shadow: 0 1px 3px darken($bgColor,10)

.dropp-header
	background: $bgColor
	color: $textColor
	border-bottom: 2px solid $trimColor
	+align-items(stretch)
	+display(flex)
	+flex-direction(row)
	+justify-content(flex-start)

.dropp-header__title
	display: block
	padding: .8em .5em
	+flex(8)
	+ellipsis(100%)

.dropp-header__btn
	display: block
	background: darken($bgColor,3)
	color: $textColor
	padding: .8em .5em
	+flex(1)
	+transition(all .3s ease-in-out)

	.icon
		+transform(rotate(-90deg))
		&:before,&:after
			top: 30%
			left: 25%
			width: 50%
			height: 15% 
			background: $trimColor
			+transform(rotate(-45deg))
		&:after
			top: 55% 
			+transform(rotate(45deg))

	&.js-open
		background: $trimColor
		.icon
			+transform(rotate(90deg))
			&:before,&:after
				background: $textColor

	&:focus
		outline: none



.dropp-body
	overflow: hidden
	width: 100%
	max-height: 0
	background: lighten($bgColor,2)
	color: $textColor
	+transition(all .3s ease-in-out)

	&.js-open 
		max-height: 20em

	label
		display: block 
		font-size: .875em
		color: $textColor 
		text-decoration: none
		padding: 1em .5em
		font-weight: 400
		box-shadow: 0 -1px 0 darken($bgColor,5),inset 0 1px 0 lighten($bgColor,5)
		cursor: pointer

		&:first-child 
			box-shadow: none

		&:hover,&.js-open 
			background: $trimColor

		> input 
			display: none
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JS

            
              $(document).ready(function() {

  // Default dropdown action to show/hide dropdown content
  $('.js-dropp-action').click(function(e) {
    e.preventDefault();
    $(this).toggleClass('js-open');
    $(this).parent().next('.dropp-body').toggleClass('js-open');
  });

  // Using as fake input select dropdown
  $('label').click(function() {
    $(this).addClass('js-open').siblings().removeClass('js-open');
    $('.dropp-body,.js-dropp-action').removeClass('js-open');
  });
  // get the value of checked input radio and display as dropp title
  $('input[name="dropp"]').change(function() {
    var value = $("input[name='dropp']:checked").val();
    $('.js-value').text(value);
  });

});
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