* {
    margin: 0;
    padding: 0;
    box-sizing: content-box;
}

body {
    padding: 2rem;
    background-color: #333;
    color: whitesmoke;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    font-size: 2rem;
}

input, button {
    font-size: 2rem;
    padding: 1rem;
    border-radius: 10px;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    text-align: center;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.coords {
    font-size: 1.5rem;
}

hr {
    width: 100%;
    border: 0;
    border-top: 1px solid #666;
}

footer img {
    width: 148px;
    height: 148px;
    image-rendering: pixelated;
}

footer {
    text-align: center;
}

footer p {
    margin: 1rem 0 0;
    font-size: 0.9rem;
}
.f-white { color: #ffffff; }
.f-green { color: #2ecc71; }
.f-red   { color: #DC143C; }