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$('.question-js').on('click', function () {
	$(this).toggleClass('active');
	$(this).parent().children('p').slideToggle();
});

<ul class="list-questions">
	<li>
		<div class="question-js"><span>Вопрос 1</span></div>
		<p>Ответ 1</p>
	</li>
	<li>
		<div class="question-js"><span>Вопрос 2</span></div>
		<p>Ответ 2</p>
	</li>
	<li>
		<div class="question-js"><span>Вопрос 3</span></div>
		<p>Ответ 3</p>
	</li>
</ul>

.list-questions {
	margin-bottom: 25px;
	overflow: hidden;
	list-style: none;
	padding: 15px;
}
.list-questions li {
	margin-bottom: 20px;
}
.list-questions .question-js {
	border: 1px solid #FCA311;
	color: #213663;
	cursor: pointer;
	font-size: 21px;
	margin-bottom: 20px;
	padding: 17px 25px;
	position: relative;
}
.list-questions .question-js:hover {
	border-color: #FCA311;
}
.question-js span {
	border-bottom: 1px dashed #14213D;
}
.list-questions li p {
	background: #213663;
	color: #fff;
	display: none;
	font-size: 18px;
	line-height: 1.7;
	padding: 30px;
	position: relative;
}
.list-questions li p:before {
	border-bottom: 10px solid #213663;
	border-left: 10px solid transparent;
	border-right: 10px solid transparent;
	content: '';
	display: block;
	height: 0;
	left: 30px;
	position: absolute;
	top: -10px;
	width: 0;
}