Add the following css
/*AJAX CALENDAR*/
.cal_Theme1 .ajax__calendar_container{background-color: #e2e2e2; border:solid 1px #cccccc;width:250px;}
.cal_Theme1 .ajax__calendar_header{background-color: #ffffff; margin-bottom: 4px;}
.cal_Theme1 .ajax__calendar_title,
.cal_Theme1 .ajax__calendar_next,
.cal_Theme1 .ajax__calendar_prev{color: #004080; padding-top: 3px;} 100 more words