#main{
    width:350px;
    height:500px;
    background-color:#c7c7c7;
    margin: 0 auto;
}
#number_group{
    width:230px;
    height:230px;
    margin: 0 auto;
    padding:20px;
}
.number{
    width:100px;
    height:100px;
    margin-left:10px;
    margin-bottom:10px;
    background-color:#6bd421;
    border-radius:10px;
    float:left;
}
.current{
    background-color:#3b9421;
}
.num_p{
    font-size:38px;
    color:#fff;
    line-height:100px;
    margin:0 auto;
    text-align: center;
    vertical-align: center;
}
#op_char_group{
    width:230px;
    height:50px;
    margin: 0 auto;
    padding:20px;
}

.op_char{
    width:30px;
    height:30px;
    margin-left:20px;
    /*padding-top:5px;*/
    border-radius:5px;
    float:left;
    background-color:#0099FF;/*f24445*/
    font-size:16px;
    color:#fff;
    border:0px;
}
.curr{
    background-color:#cc3300;
}

.button_group{
    width:230px;
    height:50px;
    margin: 0 auto;
    padding:20px;
}
button {
    width:65px;
    height:35px;
    margin-left:8px;
    border-radius:5px;
    /*float:left;*/
    background-color:#ff1100;/*f24445*/
    font-size:16px;
    color:#fff;
    border:0px;
}
#g8 {
	position:absolute;
	margin-top: 50px;
	margin-left:7px;
	}