Handle custom errors using Custom error page in ASP.Net

Hi

I want put custom error page in my website so I wrote below code in web.config

<httpErrors errorMode="Custom">
    <remove statusCode="404" subStatusCode="-1" />
    <error statusCode="404" subStatusCode="-1" prefixLanguageFilePath="" path="error-404.aspx" responseMode="ExecuteURL" />
</httpErrors>

is it correct?

or I should put other code?

best regards

neda