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CSS

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JavaScript

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HTML 

              
                <select name="currency-select" class="currency-select" aria-label="Currency preference:">
  <button class="btn-to-open-select">
    <selectedoption></selectedoption>
    <span class="arrow"></span>
  </button>
  <option value="eur">
    <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Flag_of_Europe.svg/510px-Flag_of_Europe.svg.png" alt="" />
    <div class="currency">
      <div class="currency-short">EUR</div>
      <div class="currency-long">Euro</div>
    </div>
    <div class="symbol" aria-hidden="true">€</div>
  </option>
  <option value="gbp">
    <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Flag_of_the_United_Kingdom_%281-2%29.svg/510px-Flag_of_the_United_Kingdom_%281-2%29.svg.png" alt="" />
    <div class="currency">
      <div class="currency-short">GBP</div>
      <div class="currency-long">Great British Pound</div>
    </div>
    <div class="symbol" aria-hidden="true">£</div>
  </option>
  <option value="usd" selected>
    <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Flag_of_the_United_States_%28DoS_ECA_Color_Standard%29.svg/510px-Flag_of_the_United_States_%28DoS_ECA_Color_Standard%29.svg.png" alt="" />
    <div class="currency">
      <div class="currency-short">USD</div>
      <div class="currency-long">United States Dollar</div>
    </div>
    <div class="symbol" aria-hidden="true">$</div>
  </option>
<option value="jpy">
    <img src="https://upload.wikimedia.org/wikipedia/en/thumb/9/9e/Flag_of_Japan.svg/510px-Flag_of_Japan.svg.png" alt="" />
    <div class="currency">
      <div class="currency-short">JPY</div>
      <div class="currency-long">Japanese Yen</div>
    </div>
    <div class="symbol" aria-hidden="true">¥</div>
  </option>
  <option value="bitcoin">
    <img src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/46/Bitcoin.svg/300px-Bitcoin.svg.png" alt="" />
    <div class="currency">
      <div class="currency-short">BTC</div>
      <div class="currency-long">Bitcoin</div>
    </div>
    <div class="symbol" aria-hidden="true">₿</div>
  </option>
</select>
!

CSS 

              
                /* Enter into custom mode */

select,
::picker(select) {
  appearance: base-select;
}

/* remove checkmark  */
option::before {
  display: none;
}


/* Styling the options list */

::picker(select) {
  border-radius: 0.5rem;
  padding: 0;
}

option {
  grid-template-columns: 1.5rem 1fr auto;
  padding: 0.5rem 1rem;
  
  &:nth-child(even):not(:hover) {
    background: #ececec;
  }
  
  .symbol {
    margin-left: 1rem;
  }
  
  .currency-long {
    font-size: 80%;
    color: #595959;
  }
  
  .symbol {
    justify-self: end;
  }
}

/* Styles for both the options and selectedoption */

option,
selectedoption {
  display: grid;
  gap: 1rem;
  font-size: 1rem;
  align-items: center;
}

/* Style what you see before you open the select dropdown */

selectedoption {
  padding: 0.5rem;
  grid-template-columns: 1.5rem auto;
  
  .symbol,
  .currency-long {
    display: none
  }
}

.btn-to-open-select {
  border: none;
  border-radius: 0.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  padding: 0 1rem 0 0.5rem;
  width: 8.25rem;
  
  p {
    line-height: 0;
  }
}

.arrow {
  margin-left: 0.5rem;
  align-self: center;
  transition: rotate 0.25s;
  background-image: url("data:image/svg+xml,%3C%3Fxml version='1.0' encoding='UTF-8'%3F%3E%3Csvg id='Layer_1' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 66.49 42.37'%3E%3Cdefs%3E%3Cstyle%3E .cls-1 %7B fill: %23221f20; stroke-width: 0px; %7D %3C/style%3E%3C/defs%3E%3Cpath class='cls-1' d='M3.96,0h58.57c3.37,0,5.2,3.95,3.01,6.52l-29.28,34.46c-1.58,1.86-4.45,1.86-6.03,0L.95,6.52C-1.23,3.95.59,0,3.96,0Z'/%3E%3C/svg%3E");
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    filter: brightness(4);
    width: 0.5rem;
    height: 0.5rem;
  
  .currency-select:open & {
    rotate: x 180deg;
  }
}

/* etc */

[hidden] {
  display: none;
}

body {
  margin: 2rem 4rem;
}

img,
figure {
  width: 100%;
}
!

JS
!
999px

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