.liangdiv{
    text-align: center;
}
.offon{
    cursor: pointer;
    display: inline-block;
    border: 1px solid #999;
    background-color: #444;
    border-radius: 15px;
    height: 9.5rem;
    padding: 1.5rem 0 0 0;
    width: 9.5rem;
    margin: 0.75rem auto 1.5rem auto;
    color: #fff;
    box-shadow: 0 2px 4px 0 #0e1e251f, 0 2px 16px 0 #0e1e2552;
    text-align: center;
}
.night .offon{
    border: 1px solid #444;
}
.offon i{
    margin-top: 0.8rem;
    margin-bottom: 0.5rem;
    font-size: 3.5rem;
}
.offon p{
    display: block;
    font-size: 1rem;
    margin: 1rem 0.25rem 0;
}
.offon.act{
    border: 1px solid #42b983;
    background-color: #42b983;
}
.night .offon.act{
    border: 1px solid #42b983;
}
.liangdiv>p{
    font-size: 0.65rem;
    display: none;
    max-width: 290px;
    width: 100%;
    margin: auto;
    padding: 0.5rem 0;
    border-radius: 6px;
    border: 1px solid #abdcff;
    background-color: #f0faff;
    color: #4b8ebe;
}
.night .liangdiv>p{
    background-color: #222;
    border: 1px solid #444;
    color: #ccc;
}