html{
    /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#337ab7+0,243d7d+100 */
    background: #337ab7; /* Old browsers */
    background: -moz-radial-gradient(center, ellipse cover, #337ab7 0%, #243d7d 100%); /* FF3.6-15 */
    background: -webkit-radial-gradient(center, ellipse cover, #337ab7 0%,#243d7d 100%); /* Chrome10-25,Safari5.1-6 */
    background: radial-gradient(ellipse at center, #337ab7 0%,#243d7d 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#337ab7', endColorstr='#243d7d',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
}
html,body{
    font-family: 'Open Sans', sans-serif;
    min-height: 100%;
}
#login_box {
    width: 400px;
    padding: 30px 40px 20px;
    border: 4px solid #c4c4c4;
    -webkit-box-shadow: 2px 2px 10,px 1px #B8B0B0;
    box-shadow: 2px 2px 10,px 1px #B8B0B0;
    background: #fefefe;
}

#login_box h2 {
    margin-bottom: 30px;
    text-align: center;
    font-size: 3em;
}
#login_box .btn {
    margin-top: 20px;
}
#login_box .input-group{
    margin-bottom: 4px;
}
#login_box .input-group-addon i.fa{width: 14px;}
#recordarcontrasena{
    text-align: center; 
    padding-bottom: 10px;
}