Hi Twin, this CSS will change the submit button’s background and border to purple (just an example colour change it to whatever you like) and text to white on hover:
button:focus, input[type="button"]:focus, input[type="reset"]:focus, input[type="submit"]:focus,
button:hover, input[type="button"]:hover, input[type="reset"]:hover, input[type="submit"]:hover {
background-color: #bb00bb;
border: 1px solid #bb00bb;
color: #ffffff;
}
Let me know if that does what you’re after.