<select>
  <button>
    <selectedcontent></selectedcontent>
    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
      <path d="m6 9 6 6 6-6"></path>
    </svg>
  </button>
  <optgroup>
    <label>Fruits</label>
    <option value="" hidden disabled selected>Select a Fruit</option>
    <option>Apple</option>
    <option>Banana</option>
    <option>Blueberry</option>
    <option>Grapes</option>
    <option>Pineapple</option>
  </optgroup>
</select>

body {
  font-family: sans-serif;
}

select {
  appearance: base-select;
  color: #71717a;
  background-color: transparent;
  width: 180px;
  box-sizing: border-box;
  padding: 0.5rem 0.75rem;
  border: 1px solid #e4e4e7;
  border-radius: calc(0.5rem - 2px);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  cursor: pointer;

  & > button {
    display: flex;
    width: 100%;
    font-family: inherit;
    color: currentColor;

    & > svg {
      margin: 0 0 0 auto;
      width: 1.2rem;
      height: 1.2rem;
    }
  }

  &:has(option:not([hidden]):checked) {
    color: #18181b;
  }

  &:focus-visible {
    outline: 2px solid #a1a1aa;
    outline-offset: -1px;
  }

  &::picker-icon {
    display: none;
  }

  &::picker(select) {
    appearance: base-select;
    border: 1px solid #e4e4e7;
    padding: 0.25rem;
    margin-top: 0.25rem;
    border-radius: calc(0.5rem - 2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
      0 2px 4px -2px rgba(0, 0, 0, 0.1);
    cursor: default;
    transition: opacity 225ms ease-in-out, transform 225ms ease-in-out;
    transform-origin: top;
    transform: translateY(0);
    opacity: 1;
    
    @starting-style {
      transform: translateY(-0.25rem) scale(0.95);
      opacity: 0;
    }
  }

  & optgroup label {
    display: block;
    padding: 0.375rem 0.5rem;
  }

  & option {
    padding: 0.375rem 0.5rem;
    border-radius: calc(0.5rem - 4px);
    outline: none;

    &::after {
      content: "";
      width: 1rem;
      height: 1.5rem;
      margin-left: auto;
      opacity: 0;
      background: center / contain no-repeat
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2318181b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'%3E%3C/path%3E%3C/svg%3E");
    }

    &::checkmark {
      display: none;
    }

    &:checked {
      background-color: transparent;

      &::after {
        opacity: 1;
      }
    }

    &:hover,
    &:focus-visible {
      background-color: #f4f4f5;
      color: #18181b;
    }
  }
}