JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
      <div class="card" data-letter="KeyB">
        <div>
          <img class="card-img" src="img/bear.jpg" alt="bear" />
        </div>
        <span class="letter-sound">B</span>
      </div>
      <div class="card" data-letter="KeyC">
        <div>
          <img class="card-img" src="img/cat.jpg" alt="cat" />
        </div>
        <span class="letter-sound">C</span>
      </div>
      <div class="card" data-letter="KeyD">
        <div>
          <img class="card-img" src="img/dolphin.jpg" alt="dolphin" />
        </div>
        <span class="letter-sound">D</span>
      </div>
      <div class="card" data-letter="KeyE">
        <div>
          <img class="card-img" src="img/elephant.jpg" alt="elephant" />
        </div>
        <span class="letter-sound">E</span>
      </div>
      <div class="card" data-letter="KeyH">
        <div>
          <img class="card-img" src="img/horse.jpg" alt="horse" />
        </div>
        <span class="letter-sound">H</span>
      </div>
      <div class="card" data-letter="KeyL">
        <div>
          <img class="card-img" src="img/lynx.jpg" alt="lynx" />
        </div>
        <span class="letter-sound">L</span>
      </div>
      <div class="card" data-letter="KeyW">
        <div>
          <img class="card-img" src="img/wolf.jpg" alt="wolf" />
        </div>
        <span class="letter-sound">W</span>
      </div>
    </div>
    <audio data-letter="KeyL" src="sounds/jaguar.mp3"></audio>
    <audio data-letter="KeyC" src="sounds/cat.mp3"></audio>
    <audio data-letter="KeyD" src="sounds/dolphin.mp3"></audio>
    <audio data-letter="KeyH" src="sounds/horse.mp3"></audio>
    <audio data-letter="KeyW" src="sounds/wolf.mp3"></audio>
    <audio data-letter="KeyB" src="sounds/bear.mp3"></audio>
    <audio data-letter="KeyE" src="sounds/elephant.mp3"></audio>

CSS

/*Обнуление*/
* {
  padding: 0;
  margin: 0;
  border: 0;
}
*,
*:before,
*:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}
:focus,
:active {
  outline: none;
}
a:focus,
a:active {
  outline: none;
}

a {
  color: #3c3d41; /* Цвет ссылок */
}
/*a:visited {
    color: #3c3d41; /* Цвет посещенных ссылок 
   }*/
a:active {
  color: #3c3d41; /* Цвет активных ссылок */
}

nav,
footer,
header,
aside {
  display: block;
}

html,
body {
  width: 100%;
  font-size: 100%;
  line-height: 1;
  font-size: 14px;
  -ms-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

input,
button,
textarea {
  font-family: inherit;
}

input::-ms-clear {
  display: none;
}
button {
  cursor: pointer;
}
button::-moz-focus-inner {
  padding: 0;
  border: 0;
}
a,
a:visited {
  text-decoration: none;
}
a:hover {
  text-decoration: none;
}
ul li {
  list-style: none;
}
img {
  vertical-align: top;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: inherit;
  font-weight: 400;
}

/*--------------------*/
.container {
  min-height: 100vh;
  display: flex;
  justify-content: space-around;
  /* flex: 1; */
  align-items: center;
}
.card {
  width: 150px;
  border: 4px solid rgb(19, 4, 85);
  border-radius: 8px;
  margin: 10px;
  padding: 5px;
  text-align: center;
  background: rgba(46, 87, 173, 0.568);
  text-shadow: 0 0 0.5rem black;
}
.card-img {
  width: 100%;
}
.letter-sound {
  font-size: 16px;
  color: #ffc600;
  line-height: 25px;
}

JavaScript

function playSound(e) {
  const audio = document.querySelector(`audio[data-letter="${e.code}"]`);
  if (!audio) return;
  audio.currentTime = 0;
  audio.play();
}

window.addEventListener("keydown", playSound);