i have a maybe simple question but i cant find the answer online, how do i remove the blue background from the date picker when for example day is selected, or month or year? because now the black text is not readable

enter image description here

i tried styling adding no outline, background color, color on :focus, :selection all with !important but these do not seem to work for me, in my inspector i cant find anything that has blue in it,

   <input type="date" name="start_date" id="resultStartDate"
                                                       class="form-control"
                                                       placeholder="MM/JJJJ"/>

this is my code

i tried the answers from stackoverflow but these seem not to work either