Primeface Theme does not apply (maven) -

i trying change default theme (aristo) of web application "cupertino". followed several tutorials without success. used following instruction https://www.primefaces.org/documentation/ : picture of instruction theme did not change

i using
- spring framework
- maven
- eclipse
- primefaces 5.3

here whole web.xml

<?xml version="1.0" encoding="utf-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee"       xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"      xsi:schemalocation="http://java.sun.com/xml/ns/javaee      http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"      version="2.5">  <servlet>     <servlet-name>faces servlet</servlet-name>     <servlet-class>javax.faces.webapp.facesservlet</servlet-class>     <load-on-startup>1</load-on-startup> </servlet>  <error-page>     <exception-type>org.springframework.security.access.accessdeniedexception</exception-type>     <location>/error/access_denied.xhtml</location> </error-page>   <context-param>     <param-name>javax.faces.state_saving_method</param-name>     <param-value>server</param-value> </context-param> <context-param>     <param-name>javax.faces.facelets_skip_comments</param-name>     <param-value>true</param-value> </context-param> <context-param>     <param-name>primefaces.theme</param-name>     <param-value>cupertino</param-value> </context-param>  <servlet-mapping>     <servlet-name>faces servlet</servlet-name>     <url-pattern>*.xhtml</url-pattern> </servlet-mapping>  <welcome-file-list>     <welcome-file>login.xhtml</welcome-file> </welcome-file-list> 

and pom.xml

<?xml version="1.0" encoding="utf-8"?> <project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelversion>4.0.0</modelversion>  <groupid>at.qe</groupid> <artifactid>sepm-start</artifactid> <version>1.0.1</version> <packaging>war</packaging>  <name>sepm-start</name>  <repositories>     <repository>         <id>spring-releases</id>         <url>https://repo.spring.io/libs-release</url>     </repository>     <repository>         <id>prime-repo</id>         <name>primefaces maven repository</name>         <url>http://repository.primefaces.org</url>         <layout>default</layout>     </repository> </repositories> <pluginrepositories>     <pluginrepository>         <id>spring-releases</id>         <url>https://repo.spring.io/libs-release</url>     </pluginrepository> </pluginrepositories>  <parent>     <groupid>org.springframework.boot</groupid>     <artifactid>spring-boot-starter-parent</artifactid>     <version>1.4.3.release</version> </parent>  <properties>     <project.build.sourceencoding>utf-8</project.build.sourceencoding> </properties>  <dependencies>     <dependency>         <groupid>org.primefaces.themes</groupid>         <artifactid>cupertino</artifactid>         <version>1.0.8</version>     </dependency>      <dependency>         <groupid>org.springframework.boot</groupid>         <artifactid>spring-boot-starter-data-jpa</artifactid>     </dependency>     <dependency>         <groupid>com.h2database</groupid>         <artifactid>h2</artifactid>         <scope>runtime</scope>     </dependency>      <dependency>         <groupid>org.springframework.boot</groupid>         <artifactid>spring-boot-starter-web</artifactid>     </dependency>     <dependency>         <groupid>org.springframework.boot</groupid>         <artifactid>spring-boot-starter-actuator</artifactid>     </dependency>     <dependency>         <groupid>org.springframework.boot</groupid>         <artifactid>spring-boot-starter-security</artifactid>     </dependency>     <dependency>         <groupid>com.sun.faces</groupid>         <artifactid>jsf-api</artifactid>         <version>2.2.13</version>         <scope>compile</scope>     </dependency>     <dependency>         <groupid>com.sun.faces</groupid>         <artifactid>jsf-impl</artifactid>         <version>2.2.13</version>         <scope>compile</scope>         <optional>true</optional>     </dependency>     <dependency>         <groupid>org.apache.tomcat.embed</groupid>         <artifactid>tomcat-embed-core</artifactid>         <scope>compile</scope>     </dependency>     <dependency>         <groupid>org.apache.tomcat.embed</groupid>         <artifactid>tomcat-embed-jasper</artifactid>         <scope>compile</scope>     </dependency>     <dependency>         <groupid>org.primefaces</groupid>         <artifactid>primefaces</artifactid>         <version>5.3</version>         <scope>compile</scope>     </dependency>      <!-- special test dependencies -->     <dependency>         <groupid>org.springframework.boot</groupid>         <artifactid>spring-boot-starter-test</artifactid>         <scope>test</scope>     </dependency>     <dependency>         <groupid>org.springframework.security</groupid>         <artifactid>spring-security-test</artifactid>         <scope>test</scope>     </dependency>     <dependency>         <groupid>nl.jqno.equalsverifier</groupid>         <artifactid>equalsverifier</artifactid>         <version>2.1.6</version>         <scope>test</scope>     </dependency>      <dependency>         <groupid>mysql</groupid>         <artifactid>mysql-connector-java</artifactid>         </dependency>     <dependency>         <groupid>joda-time</groupid>         <artifactid>joda-time</artifactid>         </dependency> </dependencies>  <build>     <plugins>         <plugin>             <artifactid>maven-compiler-plugin</artifactid>             <configuration>                 <source>1.7</source>                 <target>1.7</target>             </configuration>         </plugin>         <!-- enable jacoco analysis -->         <plugin>             <groupid>org.apache.maven.plugins</groupid>             <artifactid>maven-surefire-plugin</artifactid>             <configuration>                 <forkmode>once</forkmode>                 <argline>                     ${coverageagent}                 </argline>                 <usesystemclassloader>true</usesystemclassloader>             </configuration>         </plugin>         <plugin>             <groupid>org.jacoco</groupid>             <artifactid>jacoco-maven-plugin</artifactid>             <version>0.7.6.201602180812</version>             <configuration>                 <propertyname>coverageagent</propertyname>             </configuration>             <executions>                 <execution>                     <goals>                         <goal>prepare-agent</goal>                     </goals>                 </execution>                 <execution>                     <id>report</id>                     <phase>prepare-package</phase>                     <goals>                         <goal>report</goal>                     </goals>                 </execution>             </executions>         </plugin>     </plugins> </build> 

i found out no matter type in web.xml file param value same result -> no changes theme
<param-value>something</param-value>

the webapp starts , don't errors! blocking something? or forgot something?

thanks help!