html {
    background: #f4f4f4;
    padding:0 1em;
}
body {
    background: #fff;
    border: 1px solid #e4e4e4;
    color: #444;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    margin: 1em auto;
    padding: 2em 3em;
    max-width: 700px;
    -webkit-box-shadow: 0 0px 5px rgba(0, 0, 0, .1);
    box-shadow: 0 0px 5px rgba(0, 0, 0, .1);
    border-radius: 3px;
}
a{
    text-decoration: none;
    display: inline-block;
    padding: 5px 10px;
    color: #000;
    border-radius: 5px;
}
a:hover{
    text-decoration: underline;
    background: #f4f4f4;
}
h1 {
    border-bottom: 1px solid #eee;
    color: #000;
    font-size: 20px;
    margin: 0 0 20px 0;
    padding: 20px 0 20px 0;
    font-weight: 600;
    text-align: center;
}
h2,h3{
    color: #0ac;
    font-weight: 400;
}
h2{
    margin: 0;
    padding: 15px 0 0 0;
    font-size: 14px;
}
h2 i,h3 i{
    color: #999;
    font-style: normal;
    font-size: 10px;
}
h2 a{
    color: #000;
    font-size: 15px;
    font-weight: 500;
}
h3{
    margin: 0;
    padding: 10px 0 0 10px;
    font-size: 13px;
}
h3 a{
    color: #000;
    font-size: 14px;
    font-weight: 500;
}
ul{
    font-size: 13px;
    font-weight: 300;
    margin: 0;
    padding: 8px 0 8px 40px;
}
ul li{
    font-size: 13px;
    margin: 0;
    padding: 0;
    list-style: none;
    line-height: 18px;
}
li::before {
    content: "└";
    color: #ccc;
    display: inline-block;
    width: 10px;
    padding-right: 5px;
    margin-left: -20px;
}
ul li a{
    color: #000;
}
ul li a span{
    font-size: 12px;
    color: #999;
    padding-left: 15px;
}
@media (max-width: 620px) {
    ul li a span{
        display: none;
    }
}
.copyright{
    text-align: center;
    margin: 30px 0 0 0;
    padding: 20px 0 0 0;
    font-size: 12px;
    color: #999;
    font-weight: 300;
    border-top: 1px solid #eee;
}
.copyright a{
    color: #999;
}