header{
    display: flex;
    justify-content: center;
}

#table {
    font-family: Arial, Helvetica, sans-serif;
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 20px;
}
      
#table td, #table th {
    border: 2px solid #ddd;
    padding: 8px;
}
      
#table tr:nth-child(even){background-color: #f2f2f2;}
      
#table tr:hover {background-color: #ddd;}
      
#table th {
    padding-top: 12px;
    padding-bottom: 12px;
    text-align: left;
    background-color: #4287f5;
    color: white;
}

h3{
    margin-top: 30px;
}