body {
                margin: 0;
                font-family: Arial, sans-serif;
            }
            .banner {
                width: 100%;
                height: 150px;
                background-image: url('header.jpg');
                background-size: cover;
                background-position: center;
                text-align: center;
                color: #fff;
                font-size: 25px;
                padding-top: 14px;
                font-family:cursive;
            }
            .container {
                display: flex;
            }
            .menu {
                background-color: #767373;
                padding: 20px;
                width: 250px;

            }
            .content {
                flex: 1;
                padding: 40px;
            }
            @media only screen and (max-width: 768px) {
                .container {
                    flex-direction: column;
                }
                .menu {
                    width: 100%;
                }
            }
            a 
            { 
            color: #100000; 
            }
            #en-cours
            {
            
            color:#FFFF;
            }
            
            form {
                margin:auto;
                display:block;
                text-align: center;
            }

           label {

                margin-bottom: 5px;
                color: #666;

            }
    
            input {
                
                padding: 10px;
                margin-bottom: 15px;
                border: 1px solid #ccc;
                border-radius: 3px;
                box-sizing: border-box;
            }
    
            input[type="submit"] {
                background-color: #4caf50;
                color: #fff;
                padding: 10px 20px;
                border: none;
                border-radius: 3px;
                text-align: center;
                cursor: pointer;
                
            }
    
            input[type="submit"]:hover {
                background-color: #45a049;
            }