* { margin: 0; padding: 0; box-sizing: border-box; }
#messages { list-style-type: none; margin: 0; padding: 0; }
#messages li { padding: 5px 10px; }
#messages li:nth-child(odd) { background: #eee; }
body {
    margin:0px;
    padding:0px;
    font-family: "Segoe UI", "Microsoft Yahei", sans-serif;
}

.ui-shadow-inset{
    outline: none;
}