html,
body {
    margin: auto;
    font-family: 'Times New Roman', Times, serif !important;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    text-decoration: none;
}

/* .wrapper_nv {
    display: flex;
    min-height: 100vh;
} */

@media (max-width: 768px) {
    .wrapper_nv {
        flex-direction: column;
    }
}

.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}


.form-group {
    margin-bottom: 1em;
}

.form-control {
    width: 100%;
    padding: 0.5em;
    border: none;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
    background-color: #fff;
}

.form-check-label {
    font-size: 0.8em;
}

.btn {
    display: block;
    width: 100%;
    padding: 0.5em;
    border: none;
    border-radius: 5px;
    background-color: #007bff;
    color: #fff;
    font-weight: bold;
    cursor: pointer;
}

.wrapper_parent {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    /* chiều cao phần tử bên ngoài bằng chiều cao của màn hình */
}

.wrapper_nv_ad {
    width: 30em;
    border: 1px solid #ccc;
    background-color: #f3f3f3;
    padding: 1em;
}


@media (max-width: 576px) {
    form {
        margin: 0 1em;
    }
}


img {
    display: block;
    max-width: 100%;
    height: auto;
}