html, body {
  overflow-x: hidden;
}
.tong{
    background-color: white;
    /* width: 1500px;
    height: 560px; */
    width: 100%;
    display: flex;
    position: relative;
}
.tong .trai{
    width: 25%;
    height: 100%;
    float: left;
}
.tong .trai .nd1{
    width: 100%;
    height: 50%;
}
.tong .trai .nd1 img{
    width: 100%;
    height: 75%;
}
.tong .trai .nd1 a{
    font-size: 20px;
    font-weight: bold;
    font-family: Cambria;
    color: #222222;
    text-decoration: none;
}
.tong .trai .nd1 a:hover{
    color: #0066cc;
    text-decoration: none;
    font-size: 20px;
    font-family: Cambria;
}
.tong .giua{
    width: 44%;
    height: 100%;
    float: left;
    padding-left: 10px;
}
.tong .giua img{
    width: 100%;
    height: 70%;
}
.tong .giua a{
    text-decoration: none;
    font-size: 20px;
    font-weight: bolder;
    color: #222222;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}
.tong .giua a:hover{
    color: #0066cc;
    text-decoration: none;
    font-size: 20px;
    font-family: Cambria;
}
.tong .phai{
    width: 30%;
    height: 100%;
    float: right;
    padding-left: 8px;
}
.tong .phai .nd1{
    width: 100%;
    height: 24%;
}
.tong .phai .nd1 a{
    width: 49%;
    height: 100%;
    font-weight: bolder;
    float: left;
    color: #222222;
    font-size: 20px;
    text-decoration: none;
    font-family: Cambria;
}
.tong .phai .nd1 a:hover{
    color: #0066cc;
    text-decoration: none;
    font-size: 20px;
    font-family: Cambria;
}
.tong .phai .nd1 img{
  width: 45%;
  height: 75%;
}
.tong1 {
  width: 100%;
  height: 150px;
  background:#EFF9FF;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;     
} 
.tong1 {
  display: flex;
  align-items: center;
  justify-content: center; 
  position: relative;
  width: 100%;
  max-width: 100vw;
  height: 120px;
}
.tong1 img{
  background-size: cover;
  height: 150px;
  width: 100%;
}

.tong1 .logo img {
  display: flex;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
  background:#EFF9FF; 
  color:white; 
  padding:10px 20px; 
  border-radius:20px;
  position: absolute;
  bottom: -25%;
  left: 1%;
  width: 130px;
  right: 0.2%;
  height: auto;
}
.tong1.hide {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}
.welcome{
  width:100%;
  overflow:hidden;
  background-color: #EFF9FF;
  color:#fff;
  padding:10px 0;
}
.text{
  color:#173873;
  font-size: 18px;
  display:inline-block;
  white-space:nowrap;
  padding-left:100%;
  animation: slide-left 30s linear infinite;
}

@keyframes slide-left {
  0%   { transform: translateX(0%); }
  100% { transform: translateX(-100%); }
}
.navbar{
    display: flex;
    align-items: center;
    background-color: #EFF9FF;
    justify-content: space-between;
    padding: 5px 15px;
    position: relative;
    z-index: 1000;
    transition: all 0.3s ease; 
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    box-sizing: border-box;
 }

 .navbar.sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
}
.menu{
    list-style: none;
    display: flex;
    gap: 15px;
    margin: 0;
    padding: 0;
 }
.menu li a{
    text-decoration: none;
    font-weight: bold;
    color: black;
    padding-left: 5px;
    font-size: 18px;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
 }
.navbar button{
  width: 30px;
  height: 30px;
  cursor: pointer;
  border: none;
  background-color: #EFF9FF;
}
.menu li a:hover{
    color: #0066cc;
    border-radius: 5px;
 }
.search-bar{
  position: relative;
  transition: width 0.3s ease-in-out;
  display: flex;
 }
.search-bar input{
    width: 100%;
    padding: 10px 0px 10px 15px;
    font-size: 16px;
    border: none;
    border-radius: 20px;
    outline: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
 }
.search-bar button{
    position: absolute;
    top: 50%;
    right: -10px;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease;
    border-left: none;
    border: none;
    cursor: pointer;
    border-radius: 50%;
    background-color: #EFF9FF;
 }
 .search-bar:hover{
  width: 250px;
 }
 .search-bar:hover input{
  opacity: 1;
 }
 .search-bar:hover button{
  transform: translateY(-50%) rotate(360deg);
 }
.footer {
  background: #fff;
  border-top: 3px solid #333399;
  padding: 20px;
  font-family: Arial, sans-serif;
  font-size: 14px;
  color: #222;
}
.tong2{
    display: flex;
}
.tong2 .trai1{
    width: 25%;
    height: 100%;
    float: left
}
.tong2 .trai1 .nd2{
    width: 100%;
    height: 50%;
}
.tong2 .trai1 .nd2 img{
    width: 100%;
    height: 75%;
}
.tong2 .trai1 .nd2 a{
    font-size: 20px;
    font-weight: bolder;
    font-family: Cambria;
    color: #222222;
    text-decoration: none;
}
.tong2 .trai1 .nd2 a:hover{
    color: #0066cc;
    text-decoration: none;
    font-size: 20px;
    font-family: Cambria;
}
.tong2 .giua1{
    width: 44%;
    height: 100%;
    float: left;
    padding-left : 10px;
}
.tong2 .giua1 .nd2{
    display: flex;
    align-items: flex-start;  
    margin-bottom: 15px;
}
.tong2 .giua1 img{
    width: 160px;       
    height: 100px;      
    object-fit: cover;   
    margin-right: 10px;
}
.tong2 .giua1 a{
    float: right;
    text-decoration: none;
    font-size: 20px;
    font-weight: bolder;
    color: #222222;
    font-family: Cambria;
}
.tong2 .giua1 a:hover{
    color: #0066cc;
    text-decoration: none;
    font-size: 20px;
    font-family: Cambria;
}
.tong2 .phai1{
    width: 30%;
    height: 100%;
    float: right;
    padding-left: 8px;
}
.tong2 .phai1 img{
    width: 100%;
    height: 100%;
}
.tong3 {
  display: flex;
  gap: 20px;
  margin-bottom: 1px solid #DDDD ;
}

.left3 {
  flex: 2;
  display: flex;
  flex-direction: column;
  gap: 20px;
}


.left3 .news-item {
    display: flex;
    gap: 15px;
    border-bottom: 1px solid #ddd;
    padding-bottom: 15px;
    align-items: flex-start;
}

.left3 .news-item img {
  width: 200px;
  height: 120px;
  object-fit: cover;
  border-radius: 4px;
}

.left3 .news-text a {
  display: block;
  font-size: 18px;
  font-weight: bold;
  color: #000;
  text-decoration: none;
}

.left3 .news-text a:hover {
  color: #0066cc;
}

.left3 .news-text p {
  font-size: 14px;
  color: #555;
  font-family: Arial, Helvetica, sans-serif;
}

.right3 {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.right3 .category {
  font-size: 18px;
  font-weight: bold;
  color: #333399;
  margin-bottom: 10px;
}

.right3 .small-news {
  display: flex;
  align-items: center;
  gap: 10px;
}

.right3 .small-news img {
  width: 110px;
  height: 90px;
  object-fit: cover;
  border-radius: 4px;
}

.right3 .small-news a {
  font-weight: bold;
  font-size: 18px;
  text-decoration: none;
  color: #000;
}

.right3 .small-news a:hover {
  cursor: pointer;
  color: #0066cc;
}
.footer-container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
}
.footer-left img{
    width: 150px;
    height: 150px;
}
.footer-left, .footer-middle, .footer-right {
  flex: 1;
  min-width: 250px;
}
.footer-middle h4,
.footer-right h4 {
  margin-bottom: 10px;
  color: #333;
}

.footer-middle a {
  color: black;
  text-decoration: none;
}

.footer-middle a:hover {
  text-decoration: underline;
}

.app-links img, .social-links img {
  height: 35px;
  margin-right: 10px;
  cursor: pointer;
}

.footer-bottom {
  margin-top: 20px;
  border-top: 1px solid #ccc;
  padding-top: 10px;
  text-align: center;
  font-size: 13px;
  color: #555;
}
.backToTop {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99;
  font-size: 18px;
  border: none;
  outline: none;
  background-color: #007bff;
  color: white;
  cursor: pointer;
  padding: 12px 16px;
  border-radius: 25%;
  display: none;
  transition: 0.3s;
}

.backToTop:hover {
  background-color: #0056b3;
}