Styled button

Sample:

Code:

<style>
   button {
    --_l: 0.47;
  
    background: oklch(var(--_l) 0.05 195.6);
    color: #fff;
    font-size: 1.2rem;
    font-family: inherit;
    padding: 0.4em 0.9em;
    border-radius: 3px;
    border: 0;
    min-width: 7rem;
  }

   button:is(:hover, :focus-visible) {
    --_l: 0.27;
  }

   button:focus-visible {
    outline: 0.1em solid oklch(var(--_l) 0.05 195.6);
    outline-offset: 0.1em;
  }
</style>

<button type="button">
  Download
</button>