よくある質問のアコーディオンを作成！HTML・CSS・JSソースコードあり！jQueryを使用しないパターンも紹介！その2

<div class="faq__list">
	<div class="faq__item">
		<div class="faq-q">
			<div class="faq__mark">Q.</div>
			<div class="faq-q__txt">質問テキスト質問テキスト質問テキスト質問テキスト？</div>
			<span class="icon-right"></span>
		</div>
		<div class="faq-a">
			<div class="faq__mark">A.</div>
			<div class="faq-a__txt">
				<p>回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト</p>
			</div>
		</div>
	</div>
	<div class="faq__item">
		<div class="faq-q">
			<div class="faq__mark">Q.</div>
			<div class="faq-q__txt">質問テキスト質問テキスト質問テキスト質問テキスト？</div>
			<span class="icon-right"></span>
		</div>
		<div class="faq-a">
			<div class="faq__mark">A.</div>
			<div class="faq-a__txt">
				<p>回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト</p>
			</div>
		</div>
	</div>
	<div class="faq__item">
		<div class="faq-q">
			<div class="faq__mark">Q.</div>
			<div class="faq-q__txt">質問テキスト質問テキスト質問テキスト質問テキスト？</div>
			<span class="icon-right"></span>
		</div>
		<div class="faq-a">
			<div class="faq__mark">A.</div>
			<div class="faq-a__txt">
				<p>回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト回答テキスト</p>
			</div>
		</div>
	</div>
</div>

.faq-q {
    position: relative;
    background-color: #ffeedd;
    cursor: pointer;
}
.faq-a {
    position: relative;
    display: none;
}
.faq__mark {
    position: absolute;
    text-align: center;
    font-weight: 700;
    border: 1px solid #094;
    border-radius: 50%;
}
.faq-q .faq__mark {
    color: #fff;
    background-color: #094;
}
.faq-q__txt {
    font-weight: 700;
}
.icon-right::before {
    content: "";
    position: absolute;
    top: 50%;
    right: 0;
    width: 30px;
    height: 30px;
    border-top: 4px solid #094;
    border-right: 4px solid #094;
    transform: translate(-65%,-50%) rotate(45deg);
}
.faq-a .faq__mark {
    color: #094;
    background-color: #fff;
}
.faq__list p {
    line-height: 2;
}
@media screen and (min-width: 768px) {
    .faq__item:nth-of-type(n+2) {
        margin-top: 30px;
    }
    .faq-q {
        padding: 20px 60px 20px 80px;
    }
    .faq-a p {
        padding: 20px 60px 0 80px;
    }
    .faq__mark {
        width: 40px;
        line-height: 40px;
        font-size: 22px;
        top: 18px;
        left: 20px;
    }
}
@media screen and (max-width: 767px) {
    .faq__item:nth-of-type(n+2) {
        margin-top: 35px;
    }
    .faq__mark {
        width: 30px;
        line-height: 30px;
        font-size: 18px;
        top: 25px;
        left: 20px;
    }
    .faq-q__txt {
        padding: 20px 50px 20px 70px;
        line-height: 1.4;
    }
    .faq-a__txt {
        padding-top: 20px;
    }
    .faq-a p {
        padding: 0 14px 0 70px;
    }
}

jQuery(".faq-q").on('click', function() {
	jQuery(this).next('.faq-a').slideToggle();
});

.faq-a {
    position: relative;
    height: 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s;
}
.faq-a.open {
    opacity: 1;
    visibility: visible;
}

const faqQElements = document.querySelectorAll(".faq-q01");
faqQElements.forEach(function(element) {
	element.addEventListener("click", function() {
		const faqA = element.nextElementSibling;
		const faqATxt = faqA.querySelector(".faq-a__txt");
		faqA.classList.toggle("open");
		if (faqA.classList.contains("open")) {
			faqATxtHeight = faqATxt.offsetHeight;
			faqA.style.height = faqATxtHeight + 'px';
		} else {
			faqATxtHeight = faqATxt.offsetHeight;
			faqA.style.height = '';
		}
	});
});