.p_sign{
    background: url(https://images.cnblogs.com/cnblogs_com/grom/1206629/o_49eeb28c292f1254046a1.jpg) #FAFAFA 0 20%;
    background-size:100% 100%;
    border: #330066 1px solid; padding: 10px 10px; background-repeat: no-repeat; 
    font-family: 微软雅黑; 
    font-size: 15px;
}
.div_content{
    background-color:#FAFFF0;
    border:1px solid #000;
    background-size:100% 100%;
    font-family: 微软雅黑; 
    padding:20px;
}
.post{
    background-color:#f8ffff;
}