body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}
.container {
    margin: 500px auto;
    background-color: #ffffff;
    padding: 40px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 20px;
    

}
textarea {
    width: 100%;
    height: 300px;
    font-family: monospace;
    border: 1px solid #ccc;
    padding: 10px;
    box-sizing: border-box;
    resize: vertical;
}
.output {
    margin-top: 10px;
    white-space: pre-wrap;
    font-family: monospace;
    background-color: #f9f9f9;
    border: 1px solid #ccc;
    padding: 10px;
    overflow-x: auto;
}
.error {
    color: red;
}
.line-numbers {
    float: left;
    text-align: right;
    margin-right: 10px;
    padding-right: 10px;
    border-right: 1px solid #ddd;
    user-select: none;
}
.code-block {
    white-space: pre;
    overflow-x: auto;
}