* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* horizontal center */
    background: #c0a5a5;
}

/* Heading center */
.heading {
    max-width: 800px;
    text-align: center;
    margin: 40px auto;
}

/* Main container center */
.container {
    display: flex;
    gap: 20px;
    max-width: 800px;
    width: 100%;
    justify-content: center;
}

/* Input & Output boxes */
.input-section,
.output-section {
    flex: 1;
    display: flex;
    flex-direction: column;
}

textarea {
    height: 150px;
    padding: 10px;
    resize: none;
}

button {
    margin-top: 10px;
    margin-left: 10px;
    padding: 10px;
    cursor: pointer;
}