* {
    margin: 0;
    padding: 0;
}
body {
    max-width:768px;
    margin:0 auto;
    font-family: '微软雅黑';
    font-size: 17px;
    background-color: rgb(245, 245, 245);
    color: rgb(68, 68, 68);
}
div {
    display: block;
}
a {
    text-decoration: none;
}
p {
    display: block;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}
#head-title {
    text-align: center;
    color: #fff;
    background-color: #61b264;
}
footer {
    padding-bottom: 20px;
    text-align: center;
}
ol,ul {
    list-style: none;
}