form 表单在浏览器默认的黄色

input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
  -webkit-transition-delay: 9999s;
  -webkit-transition: color 9999s ease-out, background-color 9999s ease-out;
}