.knt {
    width:100%;
    height: auto;
    background: white;
    border: 2px solid rgb(2, 137, 200);
    box-shadow: 0px 20px 20px 0px rgba(0,0,0,0.2);
    right: 80px;
    left: 80px;
    
  }


  .kntgiua {
    width:100%;
    height: auto;
    text-align: center;
  }
  .khungtrong {
      
    margin-left: 10px;
  }



  .knx {
    width:100%;
    height: auto;
    background: rgb(169, 216, 236);
   
    box-shadow: 0px 20px 20px 0px rgba(0,0,0,0.2);
  }

  .canhbao1 {
    width:100%;
    height: auto;
    background: rgb(228, 209, 209);
    border: 2px solid rgb(216, 2, 2);
    box-shadow: 0px 20px 20px 0px rgba(0,0,0,0.2);
    color:red;
   
  }

  .khung {
    width:600px;
    height:auto;
    background-color:white;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    border-radius: 8px;
  }
  .vitrivb{
    width:400;
    height: auto;
    font-size: 16px;
    text-align: left;
    margin-top: 100px;
    margin-right:60px;
    margin-left:60px;
    font-weight: bold;
    line-height: 1.5;
    color:DarkBlue;
    
  }


  .containertk {
    width: 80%;
    margin: auto;
    padding: 20px;
    background: url('background.jpg') no-repeat center center;
    background-size: cover;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}
.studentstk {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}
.studenttk {
    width: 30%;
    background: white;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgb(246, 246, 5);
    text-align: center;
}
.studenttk img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 10px;
}
.studenttk-info {
    font-size: 16px;
}


.containersltc {
  display: flex;
  gap: 20px; /* Khoảng cách giữa 2 cột */
}

.columnsltc {
  width: 220px; /* Độ rộng cố định cho cột 1 */
  flex-shrink: 0; /* Giữ nguyên kích thước cột 1 */
}

.containersltc1 {
  display: flex;
  gap: 20px; /* Khoảng cách giữa 2 cột */
}

.columnsltc1 {
  width: 160px; /* Độ rộng cố định cho cột 1 */
  flex-shrink: 0; /* Giữ nguyên kích thước cột 1 */
}

.containersildestk {
  position: relative; 
  width: 40%;
  height: 500px;
  margin: auto;
  padding: 20px;
  
}
.studentstk img {
  
  width: 300px;
  height: 300px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 10px;
  border: 2px solid rgb(2, 137, 200);
  

}



.studentstk-info {
  font-size: 18px;
  color:rgb(0, 0, 255)
}

.containersildestk {
  position: relative; 
  width: 100%;
  height: 500px;
  margin: auto;
  padding: 20px;
  
}
.studentstk img {
  
  width: 300px;
  height: 300px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 10px;
  border: 2px solid rgb(2, 137, 200);
  

}


.studentstk-info {
  font-size: 18px;
  color:rgb(0, 0, 255);
  text-align: center;
}

.khunghinh10 {
  position: absolute;
  width: 100%;
  margin: auto;
  
}