custom search bar

I want to customize the search bar of my blog page, according to the posts in the forum I used some css code, I want to display the font 'Search' in the search box, I used input['type'] but found it doesn't work, Wondering how to make the 'Search' font appear in the search boxThis is the code I useThis is This is the code I use：
.custom_search_style input[type="search"]
.custom-search input[type="search"]::placeholder {
   color: yellow;
}
this is the image url i want to show:https://i.postimg.cc/RZsvtn05/display-Search-font.jpg