.button-ai { background-color: darkgrey; color: white; border: none; padding: 10px 20px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; font-weight: bold; cursor: pointer; }
.button-ai:hover { background-color: black; }
.button-ai:active { background-color: black !important; }
.button-ai:focus { outline: none; box-shadow: 0 0 0 2px black; }