a simple little css trick is needed.
login.png
as you can see in the image there is a space top of the black bar(containing the leave management system text).

how do i remove it.

this is my login page code below:

login.html:

Code:
<!DOCTYPE html>

<html>
<head>
<title>Create a nice login form using CSS3 and HTML5</title>
<style>

html, body
{
    height: 100%;
}

body
{
    font: 12px 'Lucida Sans Unicode', 'Trebuchet MS', Arial, Helvetica;    
    margin: 0;
    background-color: #e3e3e3;
    background-image: -webkit-gradient(linear, left top, left bottom, from(#ebeef2), to(#d9dee2));
    background-image: -webkit-linear-gradient(top, #ebeef2, #d9dee2);
    background-image: -moz-linear-gradient(top, #ebeef2, #d9dee2);
    background-image: -ms-linear-gradient(top, #ebeef2, #d9dee2);
    background-image: -o-linear-gradient(top, #ebeef2, #d9dee2);
    background-image: linear-gradient(top, #ebeef2, #d9dee2);    
}

/*--------------------*/

#login
{
    background-color: #fff;
    background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#eee));
    background-image: -webkit-linear-gradient(top, #fff, #eee);
    background-image: -moz-linear-gradient(top, #fff, #eee);
    background-image: -ms-linear-gradient(top, #fff, #eee);
    background-image: -o-linear-gradient(top, #fff, #eee);
    background-image: linear-gradient(top, #fff, #eee);  
    height: 240px;
    width: 300px;
    margin: -150px 0 0 -150px;
    padding: 30px;
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 0;
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    border-radius: 3px;  
    -webkit-box-shadow:
          0 0 2px rgba(0, 0, 0, 0.2),
          0 1px 1px rgba(0, 0, 0, .2),
          0 3px 0 #fff,
          0 4px 0 rgba(0, 0, 0, .2),
          0 6px 0 #fff,  
          0 7px 0 rgba(0, 0, 0, .2);
    -moz-box-shadow:
          0 0 2px rgba(0, 0, 0, 0.2),  
          1px 1px   0 rgba(0,   0,   0,   .1),
          3px 3px   0 rgba(255, 255, 255, 1),
          4px 4px   0 rgba(0,   0,   0,   .1),
          6px 6px   0 rgba(255, 255, 255, 1),  
          7px 7px   0 rgba(0,   0,   0,   .1);
    box-shadow:
          0 0 2px rgba(0, 0, 0, 0.2),  
          0 1px 1px rgba(0, 0, 0, .2),
          0 3px 0 #fff,
          0 4px 0 rgba(0, 0, 0, .2),
          0 6px 0 #fff,  
          0 7px 0 rgba(0, 0, 0, .2);
}

#login:before
{
    content: '';
    position: absolute;
    z-index: -1;
    border: 1px dashed #ccc;
    top: 5px;
    bottom: 5px;
    left: 5px;
    right: 5px;
    -moz-box-shadow: 0 0 0 1px #fff;
    -webkit-box-shadow: 0 0 0 1px #fff;
    box-shadow: 0 0 0 1px #fff;
}

/*--------------------*/

h1
{
    text-shadow: 0 1px 0 rgba(255, 255, 255, .7), 0px 2px 0 rgba(0, 0, 0, .5);
    text-transform: uppercase;
    text-align: center;
    color: #666;
    margin: 0 0 30px 0;
    letter-spacing: 4px;
    font: normal 26px/1 Verdana, Helvetica;
    position: relative;
}

h1:after, h1:before
{
    background-color: #777;
    content: "";
    height: 1px;
    position: absolute;
    top: 15px;
    width: 120px;   
}

h1:after
{ 
    background-image: -webkit-gradient(linear, left top, right top, from(#777), to(#fff));
    background-image: -webkit-linear-gradient(left, #777, #fff);
    background-image: -moz-linear-gradient(left, #777, #fff);
    background-image: -ms-linear-gradient(left, #777, #fff);
    background-image: -o-linear-gradient(left, #777, #fff);
    background-image: linear-gradient(left, #777, #fff);      
    right: 0;
}

h1:before
{
    background-image: -webkit-gradient(linear, right top, left top, from(#777), to(#fff));
    background-image: -webkit-linear-gradient(right, #777, #fff);
    background-image: -moz-linear-gradient(right, #777, #fff);
    background-image: -ms-linear-gradient(right, #777, #fff);
    background-image: -o-linear-gradient(right, #777, #fff);
    background-image: linear-gradient(right, #777, #fff);
    left: 0;
}

/*--------------------*/

fieldset
{
    border: 0;
    padding: 0;
    margin: 0;
}

/*--------------------*/

#inputs input
{
    background: #f1f1f1 url(login-sprite.png) no-repeat;
    padding: 15px 15px 15px 30px;
    margin: 0 0 10px 0;
    width: 253px; /* 353 + 2 + 45 = 400 */
    border: 1px solid #ccc;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;
    -moz-box-shadow: 0 1px 1px #ccc inset, 0 1px 0 #fff;
    -webkit-box-shadow: 0 1px 1px #ccc inset, 0 1px 0 #fff;
    box-shadow: 0 1px 1px #ccc inset, 0 1px 0 #fff;
}

#username
{
    background-position: 5px -2px !important;
}

#password
{
    background-position: 5px -52px !important;
}

#inputs input:focus
{
    background-color: #fff;
    border-color: #e8c291;
    outline: none;
    -moz-box-shadow: 0 0 0 1px #e8c291 inset;
    -webkit-box-shadow: 0 0 0 1px #e8c291 inset;
    box-shadow: 0 0 0 1px #e8c291 inset;
}

/*--------------------*/
#actions
{
    margin: 25px 0 0 0;
}

#submit
{		
    background-color: #ffb94b;
    background-image: -webkit-gradient(linear, left top, left bottom, from(#fddb6f), to(#ffb94b));
    background-image: -webkit-linear-gradient(top, #fddb6f, #ffb94b);
    background-image: -moz-linear-gradient(top, #fddb6f, #ffb94b);
    background-image: -ms-linear-gradient(top, #fddb6f, #ffb94b);
    background-image: -o-linear-gradient(top, #fddb6f, #ffb94b);
    background-image: linear-gradient(top, #fddb6f, #ffb94b);
    
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    border-radius: 3px;
    
    text-shadow: 0 1px 0 rgba(255,255,255,0.5);
    
     -moz-box-shadow: 0 0 1px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.3) inset;
     -webkit-box-shadow: 0 0 1px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.3) inset;
     box-shadow: 0 0 1px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.3) inset;    
    
    border-width: 1px;
    border-style: solid;
    border-color: #d69e31 #e3a037 #d5982d #e3a037;

    float: left;
    height: 35px;
    padding: 0;
    width: 120px;
    cursor: pointer;
    font: bold 15px Arial, Helvetica;
    color: #8f5a0a;
}

#submit:hover,#submit:focus
{		
    background-color: #fddb6f;
    background-image: -webkit-gradient(linear, left top, left bottom, from(#ffb94b), to(#fddb6f));
    background-image: -webkit-linear-gradient(top, #ffb94b, #fddb6f);
    background-image: -moz-linear-gradient(top, #ffb94b, #fddb6f);
    background-image: -ms-linear-gradient(top, #ffb94b, #fddb6f);
    background-image: -o-linear-gradient(top, #ffb94b, #fddb6f);
    background-image: linear-gradient(top, #ffb94b, #fddb6f);
}	

#submit:active
{		
    outline: none;
   
     -moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5) inset;
     -webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5) inset;
     box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5) inset;		
}

#submit::-moz-focus-inner
{
  border: none;
}

#actions a
{
    color: #3151A2;    
    float: right;
    line-height: 35px;
    margin-left: 10px;
}

/*--------------------*/

#back
{
    display: block;
    text-align: center;
    position: relative;
    top: 60px;
    color: #999;
}

.header{
    /*text-decoration:none;
    border:0;
    width : 165px;
    height : 60px;
    margin : 0;
    padding : 0;
    background : url(../images/company_logo.png) no-repeat 0 0;*/
    font-family:'Arial Narrow', Arial, sans-serif;
    line-height: 75px;
    font-size: 30px;
    background: #000;
    opacity: 0.9;
    color: white;
    text-transform: uppercase;
    z-index: 9999;
    position: relative;
    text-align: center;
    padding-right: 120px;
    -moz-box-shadow: 1px 0px 2px #000;
    -webkit-box-shadow: 1px 0px 2px #000;
    box-shadow: 1px 0px 2px #000;
}

img.logo{
    text-decoration:none;
    border:0;
    width : 248px;
    height : 90px;
    margin-left: 20px;
    padding : 0;
    float: left;
    /*background : url(../images/company_logo.png) no-repeat 0 0;*/
}
</style>
</head>

<body>
<div class="header">
                <img class="logo" src="../images/company_logo1.png">
                <p>Leave Management System</p>
                <!-- <div class="clr"></div> --> 
            </div>
<form id="login" method="Post" action="">
    <h1>Login</h1>
    <fieldset id="inputs">
        <input id="username" type="text" placeholder="Username" autofocus required>   
        <input id="password" type="password" placeholder="Password" required>
    </fieldset>
    <fieldset id="actions">
        <input type="submit" id="submit" value="Login">
        <a href="forgot_password.html">Forgot your password?</a>
    </fieldset>
</form>

</body>
</html>