body {
    font-family: Arial, Sans-Serif;
}

.mainDiv {
    width:500px;margin:auto;border:1px solid #cccccc;background-color:#efefef;margin-top:50px;padding:0px 40px 40px 40px;text-align:center;
}

li {
    line-height: 20px;
}

.text-left {
    text-align:left;
}