Custom Login screen for Odoo

Task: Change the Odoo Login Screen style

1) Create or update the xml file named :  webclient_templates.xml

2) Add the below code.
<!-- Redesigning odoo 9 login form - Nivas M  -->
<template id="web.login" name="Login">
<style>
.form_wrapper{
background:#fff;
border:1px solid #ddd;
margin:0 auto;
width:350px;
-moz-box-shadow:1px 1px 7px #ccc;
-webkit-box-shadow:1px 1px 7px #ccc;
box-shadow:5px 5px 7px #ccc;

font-family: "Times New Roman", Georgia, Serif;
}
.form_wrapper h3{
padding:20px 30px 20px 30px;
background-color:#28517A;
color:#fff;
font-size:25px;
border-bottom:1px solid #ddd;
}
.form_wrapper h1{
padding:20px 30px 50px 30px;
background-color:#28517A;
color:#fff;
font-size:25px;
border-bottom:1px solid #ddd;
}
.form_wrapper form{
background:#fff;
}
.form_wrapper label, h1{
display:block;
padding:0px 30px 0px;
margin:10px 0px 0px 0px;

font-family: "Times New Roman", Georgia, Serif;;
font-weight: lighter;
font-size: 16px;
}
.form_wrapper input[type="text"],
.form_wrapper input[type="password"]{
border: solid 1px #538A15;
background: #FFFFFF;
margin: 5px 30px 0px 30px;
padding: 9px;
display:block;
font-size:16px;
width:76%;
background:
-webkit-gradient(
linear,
left top,
left 25,
from(#FFFFFF),
color-stop(4%, #EEEEEE),
to(#FFFFFF)
);
background:
-moz-linear-gradient(
top,
#FFFFFF,
#538A15 1px,
#FFFFFF 25px
);
-moz-box-shadow: 0px 0px 8px #f0f0f0;
-webkit-box-shadow: 0px 0px 8px #f0f0f0;
box-shadow: 0px 0px 8px #f0f0f0;
}
.form_wrapper input[type="text"]:focus,
.form_wrapper input[type="password"]:focus{
background:#feffef;
}

.form_wrapper button[type="submit"] {
background: #538A15;
border: 1px solid #ccc;
color: #333;
font-family: "Trebuchet MS", "Myriad Pro", sans-serif;
font-size: 14px;
font-weight: bold;
text-align: center;
width: 150px;
       height: 35px;
cursor:pointer;
float:right;
margin: 0px 80px 30px 0px;
text-shadow: 0px 1px 0px #fff;
-moz-border-radius: 4px;
-webkit-border-radius: 4px;
border-radius: 4px;
-moz-box-shadow: 0px 0px 2px #fff inset;
-webkit-box-shadow: 0px 0px 2px #fff inset;
box-shadow: 0px 0px 2px #fff inset;
}
.form_wrapper button[type="submit"]:hover {
background: #d9d9d9;
-moz-box-shadow: 0px 0px 2px #eaeaea inset;
-webkit-box-shadow: 0px 0px 2px #eaeaea inset;
box-shadow: 0px 0px 2px #eaeaea inset;
color: #222;

}
</style>
            <t t-call="web.login_layout">

                <form class="form_wrapper" role="form" t-attf-action="/web/login{{ '?debug' if debug else '' }}" method="post" onsubmit="this.action = this.action + location.hash">
                   <input type="hidden" name="csrf_token" t-att-value="request.csrf_token()"/>

<h3>Login</h3>

                    <div class="form-group field-db" t-if="databases and len(databases) &gt; 1">
                        <label for="db" class="control-label">Database</label>
                        <div class="input-group">
                            <input type="text" name="db" t-att-value="request.db" id="db" class="form-control" required="required" readonly="readonly"/>
                            <span class="input-group-btn">
                              <a href="/web/database/selector" class="btn btn-default">Select <i class="fa fa-database"></i></a>
                            </span>
                        </div>
                    </div>

                    <div class="form-group field-login">
                        <label for="login" class="control-label">Username</label>
                        <input type="text" name="login" t-att-value="login" id="login" class="form-control" required="required" autofocus="autofocus"/>
                    </div>

                    <div class="form-group field-password">
                        <label for="password" class="control-label">Password</label>
                        <input type="password" name="password" id="password" class="form-control" required="required" t-att-autofocus="'autofocus' if login else None"/>
                    </div>

                    <p class="alert alert-danger" t-if="error">
                        <t t-esc="error"/>
                    </p>
                    <p class="alert alert-success" t-if="message">
                        <t t-esc="message"/>
                    </p>

                    <input type="hidden" name="redirect" t-att-value="redirect"/>
               <h1><button type="submit" >Login</button> </h1>

                </form>
            </t>
        </template>
<!-- End -->