body,ul,li,p,a{
    margin: 0;
    padding: 0;
    list-style: none;
    font-family: Arial,Microsoft YaHei,sans-serif;
}
textarea::placeholder{
    font-family: Arial,Microsoft YaHei,sans-serif;
}
a{
    text-decoration: none;
}
*{
    outline:none;
    -webkit-tap-highlight-color:rgba(0,0,0,0) ;
}