* {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f4f7f6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 800px;
    text-align: center;
}

h2 {
    color: #2c3e50;
    margin-bottom: 20px; 
 }

.input-sec {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    justify-content: center;
}

input {
    padding: 12px 20px;
    width: 60%;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    outline: none;
    transition: 0.3s;
}

input:focus {
    border-color: #3498db;
}

button {
    padding: 12px 25px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: 0.3s;
}

button:hover {
    background-color: #2980b9; 
}

#result {
    margin-top: 20px;
    display: none; 
    animation: fadeIn 0.5s ease-in;
    text-align: left; 
    color: #333;
}

.student {
    text-align: left; 
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.6;
    color: #2c3e50;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

th {
    text-align: left;
    padding: 12px;
    font-weight: bold;
    border-bottom: 2px solid #eee; 
    color: #333;
}
  
td {
    padding: 12px;
    border-bottom: 1px solid #f1f1f1;
    color: #555;
}