body {
    font-family: Tahoma, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
}
header, footer {
    background: #333;
    color: white;
    padding: 10px;
}
main {
    padding: 20px;
}
nav a {
    color: #fff;
    margin-right: 10px;
}
div {
    margin-bottom: 10px;
}


/* Responsive styles */
@media screen and (max-width: 768px) {
    body {
        font-size: 16px;
    }

    header, footer {
        text-align: center;
        padding: 15px;
    }

    nav {
        display: flex;
        flex-direction: column;
        gap: 10px;
        align-items: center;
        margin-top: 10px;
    }

    nav a {
        margin: 5px 0;
        display: block;
        font-size: 18px;
    }

    img {
        max-width: 100%;
        height: auto;
    }

    main {
        padding: 10px;
    }

    div {
        padding: 5px;
    }
}

@media screen and (min-width: 769px) and (max-width: 1024px) {
    body {
        font-size: 17px;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    nav a {
        margin: 5px;
        font-size: 17px;
    }

    main {
        padding: 15px;
    }
}


/* Number grid and box layout */
.number-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    padding: 20px;
}

.number-box {
    background: #fff;
    border: 3px solid #f2a948;
    border-radius: 15px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.number-box .number {
    font-size: 22px;
    font-weight: bold;
    color: #000;
    display: block;
    margin-bottom: 10px;
    text-decoration: none;
}

.number-box .carrier-logo {
    margin: 5px 0;
}

.number-box .price {
    font-size: 18px;
    color: red;
    margin-top: 5px;
}