Window server Clustering

Hi I have two servers both are running with windows server 2012 r2 standard. In that, Primary Server hosted web server and now second as stand by server.

Now, I would like to do server Clustering From 1 server to 2 server..... and it should provide total replica. If one server goes down automatically another goes up without down time.... so that everyone can reach to webserver.

pls suggest me

Thanks

Rajesh