nav {
    position: fixed;
    z-index: 1;
    width: 100%;
    display: flex;
    background-color: #f5f6fa;
    margin-top: -10px;
    height: 100px;
}

.logo {
    width: 10%;
    margin-left: 30px;
}

nav ul li a:hover {
    color: #379bf1;
    text-decoration: underline;
}

nav ul li a {
    display: block;
    text-decoration: none;
    color: #707071;
    font-size: 20px;
    font-weight: bold;
    padding: 0px 7px;
}

nav ul li {
    display: inline-block;
    list-style: none;
}

nav ul {
    list-style: none;
    margin-top: 40px;
    padding-left: 0px;
    text-align: center;
    width: 100%;
}

nav ul li {
    position: relative;
}

nav ul ul {
    position: absolute;
    display: none;
    padding: 0;
    margin-top: 0px;
    margin-left: -20px;
    list-style: none;
    border-radius: 5px;
    border: 1px solid #bdc3c7;
    width: 140px;
    background-color: white;
    height: 123px;
    line-height: 30px;
    text-align: center;
}

nav ul ul a {
    display: block;
    line-height: 30px;
    color: #707071;
    text-decoration: none;
    font-size: 18px;
    font-weight: normal;
    padding: 0 auto;
}

nav ul li:hover>ul {
    display: block;
}

nav ul ul a:hover {
    color: #379bf1;
    background-color: #eff1f4;
    width: 120px;
}

nav .timKiem {
    margin-top: 35px;
    margin-right: 100px;
}

nav .timKiem input {
    height: 25px;
    width: 250px;
}

.banner img {
    width: 100%;
}

.nav-2 ul li a {
    font-size: x-large;
    text-decoration: none;
    margin: 30px;
    color: black;
}

.nav-2 ul li {
    list-style-type: none;
}

.nav-2 ul {
    display: flex;
    justify-content: center;
    padding: 30px;
}

.nav-2 {
    margin-top: -30px;
    font-size: 20px;
    background-color: #eff1f4;
}

.nav-2 ul li a:hover {
    color: #3a9cf1;
}

.gioithieu h1 {
    text-align: center;
    font-size: 30px;
    font-weight: bold;
    margin-top: 50px;
    margin-bottom: 30px;
}

.gioithieu p {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 20px;
    line-height: 30px;
    margin: 20px 250px;
    text-align: left;
}


/* slide show */

.slider {
    width: 90%;
    height: 600px;
    position: relative;
    margin: auto;
    overflow: hidden;
}

.slider #prev,
.slider #next {
    border-radius: 5px;
    position: absolute;
    width: 40px;
    font-size: 30px;
    border: none;
    background-color: #192041;
    color: white;
    top: 50%;
    cursor: pointer;
}

.slider #next {
    left: 94%;
}

.slider #prev:hover,
.slider #next:hover {
    background-color: red;
}

.item {
    display: none;
}

.item.active {
    display: block;
}

.item img {
    width: 100%;
    height: 600px;
    animation: zoom 1s ease;
}

@keyframes zoom {
    0% {
        transform: scale(2);
    }
    100% {
        transform: scale(1);
    }
}


/* slide show */

.img {
    text-align: center;
    margin-top: 30px;
    margin-left: 20px;
}

.img img {
    width: 30%;
    margin-right: 30px;
}

.container .TD,
.trietli .TD,
.vitri .td {
    background-color: #3a9cf1;
    color: white;
    height: 80px;
    padding-top: 25px;
    text-align: center;
    font-size: 40px;
    font-weight: bold;
    margin-top: 50px;
    margin-bottom: 50px;
}

#myCarousel {
    margin-top: 50px;
    z-index: -1;
}

.trietli {
    margin-top: 35px;
}

.trietli .td {
    font-size: 25px;
    font-weight: bold;
    color: #3a9cf1;
    text-align: center;
    text-decoration: underline;
    margin-top: 20px;
}

.trietli .nd {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 23px;
    text-align: center;
    margin: 10px 100px;
    line-height: 40px;
}

.map-container {
    position: relative;
    padding-bottom: 75%;
    padding-top: 30px;
    margin: 100px 100px;
    height: 0;
    overflow: hidden;
    z-index: -1;
}

.map-container>iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}


/*Footer*/

.d-flex1 {
    background-color: #379bf1;
    color: white;
    line-height: 25px;
    height: 100px;
}

.d-flex1 .me-5 {
    padding-left: 100px;
    padding-top: 10px;
}

.d1 img {
    width: 30%;
}

.top {
    display: flex;
}

.top .ten {
    font-size: 18px;
    margin-top: 35px;
    font-weight: bold;
    color: #57606f;
}

.footer {
    display: flex;
    padding-left: 100px;
}

.d1,
.d2,
.d3,
.d4 {
    width: 30%;
}

.d2 p a,
.d3 p a {
    text-decoration: none;
    color: #747d8c;
}

.d2 p a:hover,
.d3 p a:hover {
    color: #3a9cf1;
}

.d1 {
    margin-top: 30px;
    margin-right: 50px;
}

.d1 .camKet,
.d4 p {
    color: #747d8c;
}

.d2 .td,
.d3 .td,
.d4 .td {
    font-size: 18px;
    color: #57606f;
    margin-bottom: -5px;
}

.d2 {
    padding-left: 100px;
}


/* Giỏ hàng */

.cart {
    width: 50%;
    margin: auto;
    text-align: center;
    padding-top: 30px;
    margin-bottom: 50px;
    border: 1px solid #ddd;
    box-shadow: 2px 2px 4px #ddd;
    padding: 20px;
}

.cart i .fas.fa-times {
    cursor: pointer;
}

.cart h2 {
    margin-bottom: 20px;
}

.cart table {
    width: 100%;
}

.cart tbody tr td {
    padding: 12px 0;
    border-bottom: 1px solid #ddd;
}

.cart tbody tr td i:hover {
    color: red;
}

.cart button {
    background-color: #379bf1;
    color: white;
    text-align: right;
    height: 30px;
    padding: 0 12px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.cart button:hover {
    box-shadow: 0 0 5px #707071;
}


/* Giỏ hàng */


/* Cho giỏ hàng xuất hiện bên trái */

.cart {
    position: fixed;
    height: 100%;
    width: 400px;
    right: 0;
    top: 90px;
    background-color: rgb(233, 233, 233);
    padding: 12px 20px;
    overflow-y: scroll;
    right: -100%;
    transition: all 0.3s ease;
}


/* Cho giỏ hàng xuất hiện bên trái */