Answers for "how to remove background color in search focus css"

css focus change color

<style>
.dabutton:focus {
    background-color:yellow;
}
</style>
<button class="dabutton"></button> // <-- usage

remove auto focus selected background color

input:-webkit-autofill,
  input:-webkit-autofill:focus {
    transition: background-color 600000s 0s, color 600000s 0s;
  }