.container { 

    width: 95%; 
 
    margin: auto; 
 
 } 
 
 table { 
 
    border-collapse: collapse; 
 
 }	 
 
 table, th, td { 
 
    border: 1px solid #ddd; 
 
 } 
 
 .modal { 

    display: none; 
 
    position: fixed; 
 
    z-index: 1; 
 
    left: 0; 
 
    top: 0; 
 
    width: 100%; 
 
    height: 100%; 
 
    background-color: rgba(0, 0, 0, 0.5); 
 
 } 
 
  form#studentForm button[type="submit"] { 
 
    display: none; 
 
 }  
 /* Reset mặc định cho các trình duyệt */
* {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
}

/* Style cho body */
body {
   font-family: Arial, sans-serif;
   background-color: #f4f4f4;
   color: #333;
}

/* Style cho container */
.container {
   max-width: 1200px;
   margin: 20px auto;
   padding: 20px;
   background-color: #fff;
   border-radius: 8px;
   box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* Style cho heading */
h1 {
   text-align: center;
   margin-bottom: 20px;
   color: #4a4a4a;
}

/* Style cho button */
button {
   padding: 10px 15px;
   background-color: #e80000;
   color: #fff;
   border: none;
   border-radius: 5px;
   cursor: pointer;
   margin-bottom: 20px;
}

button:hover {
   background-color: #85020265;
}

/* Style cho table */
table {
   width: 100%;
   border-collapse: collapse;
   margin-bottom: 20px;
}

th, td {
   padding: 12px;
   text-align: left;
   border-bottom: 1px solid #ddd;
}

th {
   background-color: #f2f2f2;
   color: #333;
}

tr:hover {
   background-color: #f5f5f5;
}

/* Style cho modal */
.modal {
   display: none;
   position: fixed;
   z-index: 1;
   left: 0;
   top: 0;
   width: 100%;
   height: 100%;
   overflow: auto;
   background-color: rgba(0, 0, 0, 0.4);
}

.modal-content {
   background-color: #fefefe;
   margin: 15% auto;
   padding: 20px;
   border: 1px solid #888;
   width: 80%;
   max-width: 500px;
   border-radius: 8px;
}

.close {
   color: #aaa;
   float: right;
   font-size: 28px;
   font-weight: bold;
}

.close:hover,
.close:focus {
   color: black;
   text-decoration: none;
   cursor: pointer;
}

/* Style cho form */
form {
   display: flex;
   flex-direction: column;
}

label {
   margin-bottom: 5px;
   color: #333;
}

input[type="number"],
input[type="text"],
input[type="date"] {
   padding: 10px;
   margin-bottom: 15px;
   border: 1px solid #ccc;
   border-radius: 5px;
   font-size: 16px;
}

button[type="submit"] {
   padding: 10px;
   background-color: #28a745;
   color: #fff;
   border: none;
   border-radius: 5px;
   cursor: pointer;
}

button[type="submit"]:hover {
   background-color: #218838;
}

/* Style cho pagination */
.pagination-controls {
   text-align: center;
   margin-top: 20px;
}

.pagination-controls button {
   padding: 10px 15px;
   margin: 0 5px;
   background-color: #007bff;
   color: #fff;
   border: none;
   border-radius: 5px;
   cursor: pointer;
}

.pagination-controls button:hover {
   background-color: #0056b3;
}