Iview's DatePicker sets the font size of placeholder

problem description

DatePicker of iview sets the font size of placeholder?

the environmental background of the problems and what methods you have tried

use:-webkit-input-placeholder {/ Webkit browsers /

color:-sharp999;
font-size:16px;

}
:-moz-placeholder {/ Mozilla Firefox 4 to 8 /
color:-sharp999;
font-size:16px;
}
:: moz-placeholder {/ Mozilla Firefox 19 + /
color:-sharp999;
font-size:16px;
}
:-ms-input-placeholder {/ Internet Explorer 10 + /

color:-sharp999;
font-size:16px;

} is still no good

related codes

/ / Please paste the code text below (do not replace the code with pictures)
< date-picker type= "daterange" placeholder= "Please select a date": options= "options_date" class= "data_ck date_220" @ on-change= "changDate" > < / date-picker >
placeholder. The default is the font size of 12px, but now you want to change it to 14px.

what result do you expect? What is the error message actually seen?

placeholder font becomes 14px

Aug.03,2021
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