html,body { height: 100%; }

    body{
        display: -ms-flexbox;
        display: -webkit-box;
        display: flex;
        -ms-flex-align: center;
        -ms-flex-pack: center;
        -webkit-box-align: center;
        align-items: center;
        -webkit-box-pack: center;
        justify-content: center;
    }

    form{
        padding-top: 0px;
        font-size: 14px;
        margin-top: 20px;
    }

    .card-title{ font-weight:300; }

    .btn{
        font-size: 14px;
        margin-top:20px;
    }

    .login-form{ 
        width:320px;
        margin:20px;
    }

    .sign-up{
        text-align:center;
        padding:20px 0 0;
    }

    span{
        font-size:14px;
    }