Changes

margin: 4px 10%;

margin: 4px 10%;

border-collapse: collapse;

border-collapse: collapse;

border: 3px solid #36c;    /* Default "notice" blue */

border: 0 solid #36c;    /* Default "notice" blue */

background-color: #fbfbfb;

background-color: #fbfbfb;

box-sizing: border-box;

box-sizing: border-box;