html {-ms-touch-action: none;}
*{
    margin: 0;
    padding: 0;
    font-family: "华文细黑" Helvetica,STHeiti,Droid Sans Fallback;
}
a{text-decoration: none;color: #aaa}
body{
    text-align: center;
    color: #333;
    background: #fff;
    font-size: 62.5%;
}
.global{
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
}
input:focus{
    outline: none;
}
ul,li{list-style: none}
@media (max-width: 720px) {
    body{
        font-size: 45%;
    }
}
@media (max-width: 640px) {
    body{
        font-size: 40%;
    }
}
@media (max-width: 480px) {
    body{
        font-size: 35%;
    }
}
@media (max-width: 320px) {
    body{
        font-size: 30%;
    }
}