body{
    margin: 0px; 
    padding: 0px;

}
.header{
    width: 100%; 
    height: 120px;
    background-image: url('images/img1.jpg') ;
    background-repeat: no-repeat;
    background-position:0px -382px;
    background-size: 100%;
}
.header .header-container{
    width: 100%;
    height: 100%;
   
}
.header .header-container .title{
    color: whitesmoke;
    text-align: center;
    
}
.header .header-container h2{
    padding-top: 20px; 
}
.logo{
    width: 100px; 
    height: auto;
}
.menu{
    width: 100%;
    height: fit-content;
    background-color: rgb(0, 140, 255); 

}
.nav-link{
    color: whitesmoke;
    font-size: 20px;
    text-transform: uppercase;
    padding-left: 10px !important;
    padding-right: 10px !important;
}
.nav-link:hover{
    color: rgb(37, 19, 24) !important;
    transition: 0.3s;
}
.navbar{
    padding-top: 0px !important;
    padding-bottom: 0px !important;
}
.menu input{
    width: 300px !important; 
    margin-left: 15px;
    margin-right: 5px;
}

.body-primary{
    display: flex;
}
.col-table{
    height:463px;
    width: 75%;
    overflow: scroll;

}
.col-person{
    background-color: rgb(197, 197, 197); 
    height: fit-content;
    width: 25%;

}
#form-info input{
    width: 280px; 
    
}
#form-info button{
    width: 40%;
    margin-left: 30%;
    margin-bottom: 20px; 
    
}
th, tr, td{
    border: 1px solid gray !important;
}
th{
    position: sticky;
    top: 0;
    background-color: rgb(0, 140, 255) !important; 
    text-align: center !important;
}

.pagination a{
    font-weight: 600;
}
.adver{
    width: 100%;
    height: 500px;
    background-image: url('images/img1.jpg') ;
    background-repeat: no-repeat;
    background-position:0px -144px;
    background-size: 100%;

}
.adver button{
    display: block;
    margin: auto; 
    
    
}
.adver h3{
    text-align: center;
    padding-top: 91px;
    text-transform: uppercase;
    color: whitesmoke;
    font-weight: 300;
}
.footer{
    display: flex; 
    background-color: rgb(197, 197, 197); 

}
.footer .footer-col1{
    width: 40%;
    height: 350px;
    border-right: 1px solid gray;
    

}
.footer .footer-col2{
    width: 28%;
    height: 350px;
    border-right: 1px solid gray;

   

}
 
.footer .footer-col3{
    width: 29%;
    height: 350px;
    

}

#myBtn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 30px;
    z-index: 99;
    font-size: 18px;
    border: none;
    outline: none;
    background-color: rgb(33, 179, 33);
    color: white;
    cursor: pointer;
    padding-left: 15px;
    padding-right: 15px;
    padding-top: 10px;
    padding-bottom: 10px;
    border-radius: 4px;
  }
  
  #myBtn:hover {
    background-color: #555;
  }

  .fa-chevron-up{
      font-size: 30px;
  }
  .col1-container, .col2-container, .col3-container{
      width:fit-content;
      margin: auto;
  }
  .col1-container li, .col2-container li{
      padding-top: 20px;
      color: black;

  }
  .col1-container li a{
      text-decoration: none;
      color: black;
  }
  .col1-container li a:hover{
      color: green; 
  }
  .col1-container h4, .col2-container h4, .col3-container h4{
      text-align: center;
  }
 .cham-ngon{
     color: whitesmoke;
     text-align: center;
     margin-top: 240px; 
     font-size: 20px;
     font-weight: 200;

 }
 
 @media only screen and (max-width:800px) {
    .body-primary{
        display: block; 
    }
    /* For mobile phones: */
    .col-person, .col-table {
      width:100% !important;
    }
    
  }