body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    margin: 1rem;
    font-size: 1rem;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem;
}

.main-heading {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: #222;
}

form.form-inline {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

input.form-control {
    width: 100%;
    padding: 0.5rem;
    font-size: 1rem;
}

input.btn {
    padding: 0.5rem;
    font-size: 1rem;
    width: 100%;
}

#loading {
    font-size: 1rem;
    font-weight: bold;
    margin-top: 0.5rem;
    color: #555;
}

pre.tab {
    white-space: pre;
    overflow-x: auto;
    font-size: 1rem;
    padding: 1rem;
    background: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
}