input搜索框：根據歷史記錄自動填充後，去除默認黃色背景

若是是純色背景，直接經過box-shadow覆蓋便可：

input:-webkit-autofill {
  color: #333!important;
  -webkit-text-fill-color: #333;
  box-shadow: 0 0 0 1000px #eaeaea inset
}

input:autofill {
  color: #333!important;
  -webkit-text-fill-color: #333;
  box-shadow: 0 0 0 1000px #eaeaea inset
}

若是是透明色背景，經過transition設置足夠長的變色推遲：

input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus {
    color: #fff !important;
    -webkit-text-fill-color: #fff;
    -webkit-transition: background-color 43200s ease-in-out 0s;
    transition: background-color 43200s ease-in-out 0s;
}
input:autofill,
input:autofill:hover,
input:autofill:focus {
    -webkit-text-fill-color: #fff;
    -webkit-transition: background-color 43200s ease-in-out 0s;
    transition: background-color 43200s ease-in-out 0s;
}