body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    margin: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}


h1 {
    text-align: center;
    color: #333;
    max-width: 800px;
    margin-bottom: 30px;
}


.bloc {
    background-color: #fff;
    padding: 25px 40px;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 500px;
}

label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
    color: #333;
}

input[type="number"] {
    width: 100%;
    padding: 8px 5px;
    margin-top: 5px;
    border: 2px solid #ccc;
    border-radius: 6px;
    font-size: 15px;
    transition: all 0.3s ease;
}


input[type="number"]:focus,
input[type="number"]:hover {
    border-color: #681ead; 
    background-color: #e6f0ff; 
    outline: none;
}

button {
    margin-top: 25px;
    padding: 12px 25px;
    background-color: #4da6ff;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
}
button:hover {
    background-color: #3399ff;
    transform: translateY(-2px);
}


#span, #span1 {
    display: block;
    margin-top: 12px;
    font-weight: bold;
    color: #e60000;
}

#span1 {
    color: #006600; 
}