Bit #18
Target the button of an <input>
of <type="file">
using the ::file-selector-button
selector.
<label for="upload">Select file</label><br /><input type="file" id="upload" />
[type="file"]::file-selector-button { background-color: hotpink; padding: 0.5rem 1rem; border: 2px solid fuchsia; margin-block-end: 1rem; display: block; border-radius: 3px;}
[type="file"]::file-selector-button:hover { background-color: aqua;}