adjust the alert style and add alternate styles.
adjust the alert style and add alternate styles.

aaroncnhk/todc-bootstrap,2947721120/todc-bootstrap,ztx1491/todc-bootstrap,todc/todc-bootstrap,todc/todc-bootstrap,2947721120/googlebt4,up2vs/todc-bootstrap,todc/todc-bootstrap,mozillo/todc-bootstrap