body {
     background: turquoise;
     display: flex;
     flex-direction: column;
     align-items: center;
     justify-content: center;
     height: 100vh;
     margin: 0;
}

blended-button {
     transform: scale(1.2);
     /*--bb-color1: purple;*/
     /*--bb-blend: difference;*/
     --bb-height: 50px;
     --bb-width: 300px;
     /*--bb-font-size: 2em;*/
}
blended-button:nth-of-type(2) {
     --bb-color1: black;
     --bb-color2: white;
     --bb-blend: hard-light;
     margin-top: 50px;
}