.navbar-stm {
    position: fixed;
    right: 13px;
    background: #fff;
    border-radius: 50px;
    width: auto;
    z-index: 150;
    top: 50%;
    transform: translateY(-50%);
    padding: 5px 0px;
    border: 1px solid #f2f2f2;
    box-shadow: 0 4px 20px rgb(0 0 0 / 0.1), 0 2px 6px rgb(0 0 0 / 0.1);
}

    .navbar-stm ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

        .navbar-stm ul li {
            list-style: none;
            margin: 0 5px 30px 5px;
            text-align: center;
        }
    .navbar-stm .text-dathen {
        color: var(--bs-warning);
    }
@media (min-width: 1024px) {
    .navbar-stm ul li {
        margin: 8px;
    }
    .navbar-stm ul > li a,
    .btn-hotline {
        max-width: 72px;
    }
}

.navbar-stm ul > li a,
.btn-hotline {
    border: none;
    padding: 2px;
    display: flex;
    flex-direction: column;
    align-items: center;
    border-radius: 5px;
    text-align: center;
    font-size: 14px;
    line-height: 15px;
    color: #000;
    font-weight: 500;
    width: 100%;
    text-decoration: none;
}

@media only screen and (max-width: 812px) {
    .navbar-stm {
        width: calc(100% - 20px);
        border-radius: 20px;
        height: 80px;
        line-height: 50px;
        top: auto;
        transform: translateY(0);
        bottom: 10px;
        right: 10px;
        padding: 10px;
        box-shadow: 0 2px 8px 0 rgb(0 0 0 / 0.1);
    }

        .navbar-stm ul > li a,
        .btn-hotline {
            padding: 0;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            height: 100%;
        }

        .navbar-stm li {
            float: left;
            width: 30%;
            display: flex;
            justify-content: center;
            align-items: center;
        }
}

@media only screen and (max-width: 361px) {
    .navbar-stm {
        padding-left: 3px;
        padding-right: 3px;
    }

        .navbar-stm ul li {
            margin-left: 3px;
        }

        .navbar-stm ul > li a {
            font-size: 12px;
        }
}