body {
    font-family: 'Arimo', Arial, sans-serif;
    font-size: 14px;
    min-width: 510px;
}

p {
    font-family: 'Arimo',Arial, sans-serif;
    max-width: 750px;
    line-height: 1.3em;
}
h1 {
    font-size: 16px;
}

h2 {
    font-size: 1.2em;
}
ul {
    list-style: none;
    width: 100%;
    height: 50px;
}

li {
    float: left;
}

li a {
    padding: 8px 30px;
    display: inline-block;
    background-color: #f0f0f0;
    margin-right: 4px;
    border: 1px solid #333;
    border-radius: 8px;
    cursor: pointer;
    color: black;
}

li a.selected,
li a:hover {
    background-color: #c00;
    color: #fff;
    border-color: #c00;
}
#main_div{width:860px;margin:0px auto;padding:0px;}