为什么联系表单会让我的页脚消失？
我构建了这个联系表单，如果我单独运行它，效果会很好，但是如果我放在联系页面上，会使我的页脚消失，我真的不知道为什么会发生这种情况，我真的需要帮助。
contact.xhtml
<!DOCTYPE html>
<ui:composition
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:a4j="http://richfaces.org/a4j">
<h:form id="contact">
<h:panelGrid columns="3">
<h:outputLabel for="name" value="Nome (Obrigatório)" />
<h:inputText id="name" value="#{contact.client.name}" />
<h:message for="name" />
<h:outputLabel for="email" value="E-Mail (Obrigatório)" />
<h:inputText id="email" value="#{contact.client.email}" />
<h:message for="email" />
<h:outputLabel for="website" value="Website (Opcional)" />
<h:inputText id="website" value="#{contact.client.website}" />
<h:message for="website" />
</h:panelGrid>
<h:outputLabel for="text" value="Mensagem (Obrigatório):" /> <br/>
<h:inputTextarea id="text" value="#{contact.client.text}" rows="20" cols="80" /><br/>
<h:message for="text" />
<br/>
<h:commandButton value="Enviar" action="#{contact.sendMessage}" >
<f:ajax execute="@form" render="@form" />
</h:commandButton>
<h:outputText value="#{contact.messageStatus}" id="out" />
<a4j:status>
<f:facet name="start">
<h:graphicImage name="loader.gif" library="image" />
<h:outputText value="Enviando ..." />
</f:facet>
</a4j:status>
</h:form>
</ui:composition>
如果没有组件“contact.xhtml”，它看起来像： 
使用组件（并且没有页脚）： 
知道为什么会发生这种情况吗？ 有什么帮助吗？
更新 我在这里托管页面，大家可以看一下。
I build this contact form, which works perfectly if I run it alone, but if I put on my contact page make my footer disappear, I really don't know why this is happening, I really need help with this.
contact.xhtml
<!DOCTYPE html>
<ui:composition
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:a4j="http://richfaces.org/a4j">
<h:form id="contact">
<h:panelGrid columns="3">
<h:outputLabel for="name" value="Nome (Obrigatório)" />
<h:inputText id="name" value="#{contact.client.name}" />
<h:message for="name" />
<h:outputLabel for="email" value="E-Mail (Obrigatório)" />
<h:inputText id="email" value="#{contact.client.email}" />
<h:message for="email" />
<h:outputLabel for="website" value="Website (Opcional)" />
<h:inputText id="website" value="#{contact.client.website}" />
<h:message for="website" />
</h:panelGrid>
<h:outputLabel for="text" value="Mensagem (Obrigatório):" /> <br/>
<h:inputTextarea id="text" value="#{contact.client.text}" rows="20" cols="80" /><br/>
<h:message for="text" />
<br/>
<h:commandButton value="Enviar" action="#{contact.sendMessage}" >
<f:ajax execute="@form" render="@form" />
</h:commandButton>
<h:outputText value="#{contact.messageStatus}" id="out" />
<a4j:status>
<f:facet name="start">
<h:graphicImage name="loader.gif" library="image" />
<h:outputText value="Enviando ..." />
</f:facet>
</a4j:status>
</h:form>
</ui:composition>
Without the componet 'contact.xhtml' it looks like:
With the component (and without the footer):
Any idea why this is happening ?
Any help ?
UPDATE
I host the page here guys, so you could take a look at it.
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我检查了页面的 HTML 源代码（在浏览器中右键单击页面，查看源代码），在底部我看到未解析的 JSF 标记：
然后所有 HTML 都停在那里。
显然您忘记声明
a4j的 XML 命名空间，HTML 渲染器生气了。然而这本应在开发阶段发出明确的警告。将以下上下文参数添加到您的
web.xml中，以便更快地收到有关此类未来错误的通知：I checked the HTML source of your page (rightclick page in browser, View Source), at the bottom I see unparsed JSF tags:
and then all the HTML stops there.
Apparently you forgot to declare the XML namespace for
a4jand the HTML renderer got mad.This should in development stage however have issued a clear warning. Add the following context parameter to your
web.xmlto be notified sooner on this kind of future mistakes:由于没有代码可看，我只能猜测：表单或页脚的边距。
Since there is no code to look at, I can only guess: margins of the form or the footer.