html, body {
    height: 100%;
}

body {
    padding-top: 0;
}

div.form-signin {
    
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -175px;
    margin-top: -225px;
    width: 350px;
    
}

form.form-signin {
    text-align: center;
    padding: 19px 29px 29px;
    background-color: #fff;
    border: 1px solid #e5e5e5;
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.05);
    -moz-box-shadow: 0 1px 2px rgba(0,0,0,.05);
    box-shadow: 0 1px 2px rgba(0,0,0,.05);
}
form.form-signin .form-signin-heading,
form.form-signin .checkbox {
    margin-bottom: 10px;
}
form.form-signin input[type="text"],
form.form-signin input[type="password"] {
    font-size: 16px;
    height: auto;
    margin-bottom: 15px;
    padding: 7px 9px;
}

form.form-signin img {
    display: block;
    width: 256px;
    margin: 0 auto;
}