.reg_box .input_line input{
    font-size: 16px;
}
.reg_box .input_line input::-webkit-input-placeholder{
    font-size:16px;
}
.reg_box .input_line input::-moz-placeholder{   /* Mozilla Firefox 19+ */
    font-size:16px;
}
.reg_box .input_line input:-moz-placeholder{    /* Mozilla Firefox 4 to 18 */
    font-size:16px;
}
.reg_box .input_line input:-ms-input-placeholder{  /* Internet Explorer 10-11 */
    font-size:16px;
}

.reg_success .header{
    font-size: 16px;
}
.reg_success .content{
    font-size: 16px;
}