body {
    font-family: Arial, sans-serif;
    /* display: flex; */
    /* justify-content: center; */
    /* align-items: center; */
    /* height: 100vh; */
    margin: 0;
    background-color: #f7f7f7;
}

.container {
    text-align: center;
}

.pattern-container {
    margin: 20px 0;
    border: 1px dashed #ccc;
    height: 300px;
    width: 300px;
    display: inline-block;
}

input[type=number] {
    width: 70px;
}

label {
    font-size: 16px;
    padding-left: 10px;
}

select {
    margin: 5px;
    padding: 5px 10px;
    font-size: 14px;
    cursor: pointer;
}

button {
    margin: 5px;
    padding: 5px 10px;
    font-size: 14px;
    cursor: pointer;
}

button:hover {
    background-color: #007BFF;
    color: white;
}

button:active {
    background-color: #0056b3;
}