justify-content-center align-items-centerbody {
    height: 100%;
}

body {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
    background-color: #f5f5f5;
    height:100vh
}

.form-signin {
    width: 100%;
    max-width: 330px;
    padding: 15px;
    margin: auto;
}

    .form-signin .form-control {
        position: relative;
        box-sizing: border-box;
        height: auto;
        padding: 10px;
        font-size: 16px;
    }

        .form-signin .form-control:focus {
            z-index: 2;
        }

#inputUser {
    margin-bottom: -1px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}

#inputPassword {
    margin-bottom: 10px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}
#buttonLogIn {
    margin-top: 30px;
}