body.authentication {
    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;
    padding-top: 40px;
    padding-bottom: 40px;
}

.form-signin {
    width: 100%;
    max-width: 420px;
    padding: 15px;
    margin: 0 auto;
}

    .form-signin .form-label-group {
        position: relative;
        margin-bottom: 1rem;
    }

        .form-signin .form-label-group > input,
        .form-signin .form-label-group > label {
            padding: var(--input-padding-y) var(--input-padding-x);
            text-align: left;
        }

        .form-signin .form-label-group > label {
            position: absolute;
            top: 0;
            left: 0;
            display: block;
            width: 100%;
            margin-bottom: 0; /* Override default `<label>` margin */
            font-size: 1rem;
            font-weight: 400;
            line-height: 1.5;
            color: #495057;
            border: 1px solid transparent;
            border-radius: .25rem;
            transition: all .1s ease-in-out;
        }

        .form-signin .form-label-group input::-webkit-input-placeholder {
            color: transparent;
        }

        .form-signin .form-label-group input:-ms-input-placeholder {
            color: transparent;
        }

        .form-signin .form-label-group input::-ms-input-placeholder {
            color: transparent;
        }

        .form-signin .form-label-group input::-moz-placeholder {
            color: transparent;
        }

        .form-signin .form-label-group input::placeholder {
            color: transparent;
        }

        .form-signin .form-label-group input:not(:placeholder-shown) {
            padding-top: calc(var(--input-padding-y) + var(--input-padding-y) * (2 / 3));
            padding-bottom: calc(var(--input-padding-y) / 3);
        }

            .form-signin .form-label-group input:not(:placeholder-shown) ~ label {
                padding-top: calc(var(--input-padding-y) / 3);
                padding-bottom: calc(var(--input-padding-y) / 3);
                font-size: 12px;
                color: #777;
            }

.form-signin .password-container {
    position: relative;
    margin-bottom: 1rem;
    display: flex;
}

    .form-signin .password-container .fa-eye {
        cursor: pointer;
        color: lightgray;
        display: flex;
        margin-left: -1.5rem;
        margin-top: 0.7rem;
    }

    .form-signin .password-container .fa-eye-slash {
        cursor: pointer;
        color: lightgray;
        display: flex;
        margin-left: -1.5rem;
        margin-top: 0.7rem;
    }