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HTML 

              
                <html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>A Language Translator</title>
</head>

<body>
  <div class="container">
    <div class="wrapper">
      <div class="text-input">
        <textarea spellcheck="false" class="from-text" placeholder="Enter text"></textarea>
        <ul class="controls">
          <li class="row from">
            <div class="icons">
              <ion-icon id="from" name="volume-medium-outline"></ion-icon>
              <ion-icon id="from" name="copy-outline"></ion-icon>
            </div>
            <select></select>
          </li>
          <li class="exchange">
            <ion-icon name="swap-vertical"></ion-icon>
          <li class="row to">
            <select></select>
            <div class="icons">
              <ion-icon id="to" name="volume-medium-outline"></ion-icon>
              <ion-icon id="to" name="copy-outline"></ion-icon>
            </div>
          </li>
        </ul>
        <textarea spellcheck="false" readonly disabled class="to-text" placeholder="Translation"></textarea>
      </div>
    </div>
    <button>Translate it</button>
  </div>

</body>

</html>
!

CSS 

              
                * {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Poppins", Lalezar, cursive, sans-serif;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  min-height: 100vh;
  background: #6320ee;
}

.container {
  max-width: 700px;
  width: 100%;
  padding: 30px;
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0px 0px 36px -5px #b8b8ff;
}

.wrapper {
  border-radius: 5px;
  border: 1px solid #ccc;
}

.wrapper .text-input {
  display: block;
}

.text-input .to-text {
  border-radius: 0px;
  border-top: 1px solid #ccc;
}

.text-input textarea {
  height: 250px;
  width: 100%;
  border: none;
  outline: none;
  resize: none;
  background: none;
  font-size: 18px;
  padding: 10px 15px;
  border-radius: 0.3rem;
}

.text-input textarea::placeholder {
  color: #b7b6b6;
}

.controls,
li,
.icons,
.icons ion-icon {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.controls {
  list-style: none;
  padding: 12px 15px;
  border-top: 1px solid #ccc;
}

.controls .row .icons {
  width: 38%;
}

.controls .row .icons ion-icon {
  width: 50px;
  color: #adadad;
  font-size: 1.7rem;
  cursor: pointer;
  transition: transform 0.2s ease;
  justify-content: center;
}
.controls .row.from .icons {
  padding-right: 15px;
  border-right: 1px solid #ccc;
}
.controls .row.to .icons {
  padding-left: 15px;
  border-left: 1px solid #ccc;
}
.controls .row select {
  color: #333;
  border: none;
  outline: none;
  font-size: 18px;
  background: none;
  padding-left: 5px;
}
.text-input textarea::-webkit-scrollbar {
  width: 4px;
}
.controls .row select::-webkit-scrollbar {
  width: 8px;
}
.text-input textarea::-webkit-scrollbar-track,
.controls .row select::-webkit-scrollbar-track {
  background: #fff;
}
.text-input textarea::-webkit-scrollbar-thumb {
  background: #ddd;
  border-radius: 8px;
}
.controls .row select::-webkit-scrollbar-thumb {
  background: #999;
  border-radius: 8px;
  border-right: 2px solid #ffffff;
}
.controls .exchange {
  color: #adadad;
  cursor: pointer;
  font-size: 1.7rem;
  transition: transform 0.2s ease;
}
.controls ion-icon:active {
  transform: scale(0.9);
}
.container button {
  width: 100%;
  padding: 14px;
  outline: none;
  border: none;
  color: #fff;
  cursor: pointer;
  margin-top: 20px;
  font-size: 1.2rem;
  border-radius: 0.3rem;
  background: #6320ee;
}

@media (max-width: 660px) {
  .container {
    padding: 20px;
  }
  .wrapper .text-input {
    flex-direction: column;
  }
  .text-input .to-text {
    border-left: 0px;
    border-top: 1px solid #ccc;
  }
  .text-input textarea {
    height: 200px;
  }
  .controls .row .icons {
    display: inline-flex;
    flex-direction: column;
  }
  .container button {
    padding: 13px;
    font-size: 1.2rem;
  }
  .controls .row select {
    font-size: 1.2rem;
  }
  .controls .exchange {
    font-size: 1.2rem;
  }
}
@media screen and (max-width: 1250px) {
  .container {
    zoom: 0.7;
  }
}
!

JS 

              
                const languages = {
  "am-ET": "Amharic",
  "ar-SA": "Arabic",
  "be-BY": "Bielarus",
  "bem-ZM": "Bemba",
  "bi-VU": "Bislama",
  "bjs-BB": "Bajan",
  "bn-IN": "Bengali",
  "bo-CN": "Tibetan",
  "br-FR": "Breton",
  "bs-BA": "Bosnian",
  "ca-ES": "Catalan",
  "cop-EG": "Coptic",
  "cs-CZ": "Czech",
  "cy-GB": "Welsh",
  "da-DK": "Danish",
  "dz-BT": "Dzongkha",
  "de-DE": "German",
  "dv-MV": "Maldivian",
  "el-GR": "Greek",
  "en-GB": "English",
  "es-ES": "Spanish",
  "et-EE": "Estonian",
  "eu-ES": "Basque",
  "fa-IR": "Persian",
  "fi-FI": "Finnish",
  "fn-FNG": "Fanagalo",
  "fo-FO": "Faroese",
  "fr-FR": "French",
  "gl-ES": "Galician",
  "gu-IN": "Gujarati",
  "ha-NE": "Hausa",
  "he-IL": "Hebrew",
  "hi-IN": "Hindi",
  "hr-HR": "Croatian",
  "hu-HU": "Hungarian",
  "id-ID": "Indonesian",
  "is-IS": "Icelandic",
  "it-IT": "Italian",
  "ja-JP": "Japanese",
  "kk-KZ": "Kazakh",
  "km-KM": "Khmer",
  "kn-IN": "Kannada",
  "ko-KR": "Korean",
  "ku-TR": "Kurdish",
  "ky-KG": "Kyrgyz",
  "la-VA": "Latin",
  "lo-LA": "Lao",
  "lv-LV": "Latvian",
  "men-SL": "Mende",
  "mg-MG": "Malagasy",
  "mi-NZ": "Maori",
  "ms-MY": "Malay",
  "mt-MT": "Maltese",
  "my-MM": "Burmese",
  "ne-NP": "Nepali",
  "niu-NU": "Niuean",
  "nl-NL": "Dutch",
  "no-NO": "Norwegian",
  "ny-MW": "Nyanja",
  "ur-PK": "Pakistani",
  "pau-PW": "Palauan",
  "pa-IN": "Panjabi",
  "ps-PK": "Pashto",
  "pis-SB": "Pijin",
  "pl-PL": "Polish",
  "pt-PT": "Portuguese",
  "rn-BI": "Kirundi",
  "ro-RO": "Romanian",
  "ru-RU": "Russian",
  "sg-CF": "Sango",
  "si-LK": "Sinhala",
  "sk-SK": "Slovak",
  "sm-WS": "Samoan",
  "sn-ZW": "Shona",
  "so-SO": "Somali",
  "sq-AL": "Albanian",
  "sr-RS": "Serbian",
  "sv-SE": "Swedish",
  "sw-SZ": "Swahili",
  "ta-LK": "Tamil",
  "te-IN": "Telugu",
  "tet-TL": "Tetum",
  "tg-TJ": "Tajik",
  "th-TH": "Thai",
  "ti-TI": "Tigrinya",
  "tk-TM": "Turkmen",
  "tl-PH": "Tagalog",
  "tn-BW": "Tswana",
  "to-TO": "Tongan",
  "tr-TR": "Turkish",
  "uk-UA": "Ukrainian",
  "uz-UZ": "Uzbek",
  "vi-VN": "Vietnamese",
  "wo-SN": "Wolof",
  "xh-ZA": "Xhosa",
  "yi-YD": "Yiddish",
  "zu-ZA": "Zulu"
};

const fromText = document.querySelector(".from-text"),
  toText = document.querySelector(".to-text"),
  exchageIcon = document.querySelector(".exchange"),
  selectTag = document.querySelectorAll("select"),
  icons = document.querySelectorAll(".row ion-icon");
(translateBtn = document.querySelector("button")),
  selectTag.forEach((tag, id) => {
    for (let lang_code in languages) {
      let selected =
        id == 0
          ? lang_code == "en-GB"
            ? "selected"
            : ""
          : lang_code == "fa-IR"
          ? "selected"
          : "";
      let option = `<option ${selected} value="${lang_code}">${languages[lang_code]}</option>`;
      tag.insertAdjacentHTML("beforeend", option);
    }
  });

fromText.addEventListener("keyup", () => {
  if (!fromText.value) {
    toText.value = "";
  }
});

translateBtn.addEventListener("click", () => {
  let text = fromText.value.trim(),
    translateFrom = selectTag[0].value,
    translateTo = selectTag[1].value;
  if (!text) return;
  toText.setAttribute("placeholder", "Translating...");
  let apiUrl = `https://api.mymemory.translated.net/get?q=${text}&langpair=${translateFrom}|${translateTo}`;
  fetch(apiUrl)
    .then((res) => res.json())
    .then((data) => {
      toText.value = data.responseData.translatedText;
      data.matches.forEach((data) => {
        if (data.id === 0) {
          toText.value = data.translation;
        }
      });
      toText.setAttribute("placeholder", "Translation");
    });
});

exchageIcon.addEventListener("click", () => {
  let tempText = fromText.value,
    tempLang = selectTag[0].value;
  fromText.value = toText.value;
  toText.value = tempText;
  selectTag[0].value = selectTag[1].value;
  selectTag[1].value = tempLang;
});

icons.forEach((icon) => {
  icon.addEventListener("click", ({ target }) => {
    if (!fromText.value || !toText.value) return;
    if (target.getAttribute("name") == "copy-outline") {
      if (target.id == "from") {
        navigator.clipboard.writeText(fromText.value);
      } else {
        navigator.clipboard.writeText(toText.value);
      }
    } else {
      let utterance;
      if (target.id == "from") {
        utterance = new SpeechSynthesisUtterance(fromText.value);
        utterance.lang = selectTag[0].value;
      } else {
        utterance = new SpeechSynthesisUtterance(toText.value);
        utterance.lang = selectTag[1].value;
      }
      speechSynthesis.speak(utterance);
    }
  });
});
!
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