div {
    margin:50px auto;
    width:800px;
}
h2, h3 {
    text-align:center;
}
ul {
    padding:0;
    list-style:none;
}
ul li {
    line-height:40px;
    text-align:center;
}
span {
    display:inline-block;
    text-align:right;
    width:200px;
}
[type = "text"] {
    width:200px;
}
[type = "submit"] {
    padding:5px 10px;
    width:100px;
    font-size:15px;
}
i {
    font-style:normal;
    color:red;
    font-size:12px;
}