Hi,
At the bottom of your localhost page there is a message :
It's a bad idea to add localhost in the url of launching projects. It is best to define VirtualHost in wamp/bin/apache/apache2.4.x/conf/extra/httpd-vhosts.conf file and not add localhost in the url.For the moment everything seems to be working well, but sooner or later you will have problems, such as no access to the administration of WordPress, Joomla or any other CMS. You may also have major problems transferring sites between development and production.
This is why, as with all hosts, it is highly recommended to use VirtualHost and remove this option to add localhost to urls.
See :
The need for Virtual Host---------------------------------------------------------------
Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons