.amplify-button.amplify-field-group__control.amplify-button--primary.amplify-button--fullwidth {
    background: black;
    border-radius: 20px;
}

.amplify-button.amplify-field-group__control.amplify-button--primary.amplify-button--fullwidth:hover {
    background: gray;
}

.amplify-button.amplify-field-group__control.amplify-button--link.amplify-button--small {
    color: black;
}

.amplify-button.amplify-field-group__control.amplify-button--link.amplify-button--small:hover {
    background: lightgray;
}