EDIT
Here is the forgot password submit page:
<apex:page docType="html-5.0" showHeader="false" sidebar="false" standardStylesheets="false" applyHtmlTag="false" applyBodyTag="false" id="forgotPassword" controller="ForgotPasswordController" title="{!$Label.site.forgot_password}">
<html>
<head>
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<apex:stylesheet value="{!URLFOR($Resource.SLDS103, 'assets/styles/salesforce-lightning-design-system-vf.css')}" />
<apex:stylesheet value="{!$Resource.Community_Style}"/>
<apex:includeScript value="{!$Resource.Community_JS}"/>
<!--[if !IE 7]>
<style type="text/css">
#wrap {display:table;height:100%}
</style>
<![endif]-->
<!--[if lt IE 9]>
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<style>
* {
margin: 0;
padding: 0;
}
body {
width: 100%;
background: linear-gradient(180deg, #AEB3B7 50%, #94999F 50%);
}
#formAndFishContainer {
left: 50%;
top: 50%;
position: absolute;
-webkit-transform: translate3d(-50%, -50%, 0);
-moz-transform: translate3d(-50%, -50%, 0);
transform: translate3d(-50%, -50%, 0);
width:550px;
}
#form_login {
width: 370px;
padding: 25px;
background-color:white;
box-shadow: 10px 10px 5px #66696E;
border-radius: 25px;
margin-left:85px;
}
.slds .loginTitle {
font-size:27px;
font-weight:bold;
}
.slds .loginTextBox {
width:100%;
-moz-border-radius: 15px;
border-radius: 15px;
border:solid 1px #94999F;
padding:5px;
margin-bottom:10px;
margin-top:10px;
}
.slds .loginButton {
width:100%;
-moz-border-radius: 15px;
border-radius: 15px;
border:solid 1px #94999F;
padding:5px;
margin-bottom:10px;
margin-top:10px;
background-color:#99092D;
color:white;
text-transform: uppercase;
}
.slds .fish {
float:right;
margin-top:165px;
}
</style>
</head>
<body>
<div class="slds">
<div id="main" style="width:auto;">
<c:LoginCommunityHeader />
<div id="formAndFishContainer">
<div id="form_login" style="float:left;">
<h1 class="loginTitle">Forgotten Password</h1>
<apex:outputText styleClass="title" value="{!$Label.site.enter_password}"/>
<apex:form id="theForm">
<apex:pageMessages id="error"/>
<apex:panelGrid columns="3" style="margin-top:1em;">
<apex:inputText required="true" id="username" value="{!username}" html-placeholder="Username" styleClass="loginTextBox"/>
<apex:commandButton id="submit" value="{!$Label.site.submit}" action="{!forgotPassword}" styleClass="loginButton"/>
</apex:panelGrid>
</apex:form>
<apex:form >
<center><apex:commandLink action="{!cancel}">Cancel</apex:commandLink></center>
</apex:form>
</div>
</div>
</div>
</div>
</body>
</html>
</apex:page>