폰트오썸 추가

    <link
      rel="stylesheet"
      href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.14.0/css/all.min.css"
      integrity="sha512-1PKOgIY59xJ8Co8+NE6FZ+LOAZKjy+KY8iq0G4B3CyeY6wYHN3yt9PW0XpSriVlkMXe40PTKnXrLnZ9+fkDaog=="
      crossorigin="anonymous"
    />

html

    <h1>추억의 유머</h1>
    <div class="faq-container">
      <div class="faq active">
        <h3 class="faq-title">화장실에서 방금 나온 사람을 네 글자로?</h3>
        <p class="faq-text">일본사람.</p>
        <button class="faq-toggle">
          <i class="fas fa-chevron-down"></i>
          <i class="fas fa-times"></i>
        </button>
      </div>

      <div class="faq">
        <h3 class="faq-title">세상에서 가장 가난한 왕은?</h3>
        <p class="faq-text">최저임금.</p>
        <button class="faq-toggle">
          <i class="fas fa-chevron-down"></i>
          <i class="fas fa-times"></i>
        </button>
      </div>

      <div class="faq">
        <h3 class="faq-title">인도는 지금 몇시지?</h3>
        <p class="faq-text">인도네시아.</p>
        <button class="faq-toggle">
          <i class="fas fa-chevron-down"></i>
          <i class="fas fa-times"></i>
        </button>
      </div>

      <div class="faq">
        <h3 class="faq-title">아몬드가 죽으면 ?</h3>
        <p class="faq-text">다이아몬드.</p>
        <button class="faq-toggle">
          <i class="fas fa-chevron-down"></i>
          <i class="fas fa-times"></i>
        </button>
      </div>

      <div class="faq">
        <h3 class="faq-title">돌잔치를 영어로 ?</h3>
        <p class="faq-text">락페스티벌.</p>
        <button class="faq-toggle">
          <i class="fas fa-chevron-down"></i>
          <i class="fas fa-times"></i>
        </button>
      </div>
    </div>

css

@import url('https://fonts.googleapis.com/css?family=Muli&display=swap');

* {
  box-sizing: border-box;
}

body {
  font-family: 'Muli', sans-serif;
  background-color: #f0f0f0;
}

h1 {
  margin: 50px 0 30px;
  text-align: center;
}

.faq-container {
  max-width: 600px;
  margin: 0 auto;
}

.faq {
  background-color: transparent;
  border: 1px solid #9fa4a8;
  border-radius: 10px;
  margin: 20px 0;
  padding: 30px;
  position: relative;
  overflow: hidden;
  transition: 0.3s ease;
}

.faq.active {
  background-color: #fff;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1), 0 3px 6px rgba(0, 0, 0, 0.1);
}

.faq.active::before,
.faq.active::after {
  content: '\f075';
  font-family: 'Font Awesome 5 Free';
  color: #2ecc71;
  font-size: 7rem;
  position: absolute;
  opacity: 0.2;
  top: 20px;
  left: 20px;
  z-index: 0;
}

.faq.active::before {
  color: #3498db;
  top: -10px;
  left: -30px;
  transform: rotateY(180deg);
}

.faq-title {
  margin: 0 35px 0 0;
}

.faq-text {
  display: none;
  margin: 30px 0 0;
}

.faq.active .faq-text {
  display: block;
}

.faq-toggle {
  background-color: transparent;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  padding: 0;
  position: absolute;
  top: 30px;
  right: 30px;
  height: 30px;
  width: 30px;
}

.faq-toggle:focus {
  outline: 0;
}

.faq-toggle .fa-times {
  display: none;
}

.faq.active .faq-toggle .fa-times {
  color: #fff;
  display: block;
}

.faq.active .faq-toggle .fa-chevron-down {
  display: none;
}

.faq.active .faq-toggle {
  background-color: #9fa4a8;
}