#hang1 {
   height: 400px;
   width: 100%;
   background-color: rgb(18, 18, 197);
   border-radius: 3px;
}

#dieuchinhanh1 {
   margin-top: 20px;
   border-radius: 5px;
}

#dieuchinhanh2 {
   margin-left: 50px;
   margin-top: 30px;
   border-radius: 5px;

}

#anh1 {
   height: 240px;
   width: 97%;
   margin-left: 20px;

}

#anh2 {
   margin-left: 44px;
   margin-top: 10px;
}

#chinhchu1 {
   margin-left: 30px;
   margin-top: 30px;
   color: white;
   font-size: 20px;
   font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
}

#gach {
   height: 2px;
   width: 95%;
   background-color: white;
   margin-left: 40px;
   margin-top: 10px;
}

#chon {
   display: flex;
   margin-top: -5px;
}

a {
   color: white;
   text-decoration: none;
   margin-left: 70px;

}

input {
   height: 20px;
   width: 300px;
   margin-top: 10px;
   margin-left: 40px;
}

#kinh {
   margin-left: 20px;
   height: 20px;
   width: 120%;
   padding: 5px;
   margin-left: -30px;
   margin-top: 10px;
   border-radius: 5px;
   color: rgb(18, 18, 197);
}

#hang2 {
   height: 430px;
   width: 100%;
   margin-top: 30px;
   display: flex;

}

#hang3 {
   height: 360px;
   display: flex;
   margin-top: 20px;
}

#hang4 {
   height: 440px;
   width: 100%;
   display: flex;
   margin-top: 20px;
}

#dong1 {
   height: 400px;
   width: 60%;
   border: solid rgb(18, 18, 197);
   border-style: double;
   margin-left: 20px;
}

#dong2 {
   margin-left: 10px;
   height: 400px;
   width: 35%;
}

#dong3 {
   height: 40px;
   width: 100%;
   background-color: rgb(18, 18, 197);
   margin-left: 20px;
   border-radius: 30px 0px 0px 30px;
   color: white;
}

#dong4 {
   background-color: rgb(18, 18, 197);
   height: 60px;
   width: 27%;
   border: solid rgb(18, 18, 197);
   border-style: double;
   margin-left: 20px;
}

#dong5 {
   height: 400px;
   width: 69%;
   border: solid rgb(18, 18, 197);
   border-style: double;
   margin-left: 21px;
}

#dong6 {
   height: 400px;
   width: 27%;
   border: solid rgb(18, 18, 197);
   border-style: double;
   margin-left: 21px;
}

#timkiem {
   height: 40px;
   width: 300px;
   border: solid rgb(18, 18, 197);
   border-radius: 20px 0px 0px 20px;

}

#nuttimkiem {
   display: flex;

}

#timkiemsach {
   margin-top: 10px;
   height: 47px;
   width: 200px;
   background-color: rgb(18, 18, 197);
   border-radius: 0px 20px 20px 0px;
}

#nutlink {
   margin-top: 10px;
   margin-left: 37px;
}

#maucam {
   color: chocolate;
}

.sachmoi {
   margin-left: 30px;
   margin-top: -10px;
}

#dieuchinhphan {
   height: 300px;
   width: 100%;
   display: flex;
   margin-left: 10px;
   overflow: hidden;
}

#phan1 {
   height: 300px;
   width: 13%;
}

#phan2 {
   height: 300px;
   width: 13%;
   margin-left: 12px;
}

#phan3 {
   height: 300px;
   width: 13%;
   margin-left: 12px;
}

#phan4 {
   height: 300px;
   width: 13%;
   margin-left: 12px;
}

#phan5 {
   height: 300px;
   width: 13%;
   margin-left: 12px;
}

#phan6 {
   height: 300px;
   width: 13%;
   margin-left: 12px;
}

#phan7 {
   height: 500px;
   width: 60%;
   display: flex;
}

#phan8 {
   height: 500px;
   width: 38%;
   display: flex;
}

#anh4 {
   margin-left: 10px;
}

h5 {
   color: black;
   margin-left: 2px;
   margin-top: -1px;
}

#thongbao {
   margin-left: 30px;
   height: 40px;
   width: 100%;
   background-color: rgb(18, 18, 197);
   border-radius: 30px 30px 30px 30px;
}

#dieuchinhthongbao {
   text-align: center;
   margin-top: 10px;
   color: white;
   font-size: 20px;
}

#dangki {
   margin-left: 80px;
   height: 40px;
   width: 100%;
   background-color: rgb(18, 18, 197);
   border-radius: 30px 30px 30px 30px;
}

#dieuchinhdangki {
   text-align: center;
   margin-top: 10px;
   color: white;
   font-size: 20px;
}

#gau {
   margin-left: 40px;
}

#thongtindichvu {
   height: 500px;
   margin-top: 40px;
   margin-left: 10px;
}

#dichvu {
   margin-left: 10px;
   color: black;
}

#p1 {
   display: flex;
   margin-top: 10px;
}

#chinh1 {
   margin-left: 20px;
   margin-top: -5px;
}
#hang5{
   background-color: rgb(18, 18, 197);
   border-radius: 3px;
   height: 300px;
   width: 100%;
   display: flex;
}
#phan9{
   height: 300px;
   width: 40%;
   margin-left: 30px;
}
#phan10{
   height: 300px;
   width: 38%;
   margin-left: 30px;
}
#phan11{
   height: 300px;
   width: 30%;
   margin-left: 30px;
}
#anh5{
   margin-left: 50px;
}
.link1:hover{
   color: darkgoldenrod;
   font-size: 20px;
}
#dangnhap:hover{
   color: darkgoldenrod;
   font-size: 20px;
}
.taikhoan-matkhau :hover{
   height: 25px;
   border-radius: 30px;
}
  .khung-anh-toan-man-hinh {
    width: 100%;
    height: 400px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 15px rgba(255,255,255,0.3);
  }

  .khung-anh-toan-man-hinh img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
  }

  .khung-anh-toan-man-hinh img.hien-thi {
    opacity: 1;
  }

  /* --- SLIDESHOW 2: CỐ ĐỊNH 700x400 --- */
  .khung-anh {
   margin-top: 20px;
   margin-left: 30px;
    width: 500px;
    height: 300px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 15px rgba(255,255,255,0.3);
  }

  .khung-anh img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
  }

  .khung-anh img.hien-thi {
    opacity: 1;
  }