rpm -ivh http://nginx.org/packages/centos/7/x86_64/RPMS/nginx-1.10.0-1.el7.ngx.x86_64.rpm　　

Retrieving http://nginx.org/packages/centos/7/x86_64/RPMS/nginx-1.10.0-1.el7.ngx.x86_64.rpm
warning: /var/tmp/rpm-tmp.Wy9IRo: Header V4 RSA/SHA1 Signature, key ID 7bd9bf62: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:nginx-1:1.10.0-1.el7.ngx         ################################# [100%]
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Thanks for using nginx!

Please find the official documentation for nginx here:
* http://nginx.org/en/docs/

Commercial subscriptions for nginx are available on:
* http://nginx.com/products/

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systemctl enable nginx