html {
    font-family: "Inter var", sans-serif;
    font-feature-settings: "cv02", "cv03", "cv04", "cv11";
    font-variation-settings: normal;
    --font-family: "Inter var", sans-serif;
    --font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

#display {
    text-align: center;
    align-items: center;
    box-sizing: border-box;
    max-width: 448px;
    margin: 60px auto;
}

button.blue-button {
    color: #ffffff;
    background-color: #3b82f6;
    border: 1px solid #3b82f6;
    font-weight: 700;
    flex: 1 1 auto;
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
    border-radius: 6px;
}

button.blue-button:hover {
    transition-duration: 0.2s;
    background: #2563eb;
    color: #ffffff;
    border-color: #2563eb;
}