body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f8ff;
    color: #333;
    text-align: center;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
}

h1 {
    color: #4CAF50;
}

form {
    margin-bottom: 20px;
}

.form-group {
    margin: 10px 0;
}

input[type="text"] {
    width: calc(100% - 22px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    transition: border-color 0.3s;
}

input[type="text"]:focus {
    border-color: #4CAF50;
}

input[type="submit"] {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

input[type="submit"]:hover {
    background-color: #45a049;
    transform: scale(1.05);
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

#change-output {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
    margin-top: 18px;
    text-align: left;
}

#change-output h2 {
    color: #4CAF50;
}

.change-details {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.change-card {
    background: #e8f5e9;
    border-radius: 8px;
    padding: 10px;
    width: 30%;
    margin: 5px;
    text-align: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.total-change {
    margin-top: 20px;
    padding-top: 10px;
    border-top: 1px solid #ccc;
}

.total-change h3 {
    color: #4CAF50;
}

.total-change p {
    font-size: 1.2em;
    font-weight: bold;
    color: #333;
}