header nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background-color: #f1f1f1;
    margin: 0;
}

header nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 0.5rem;
    transition: color 0.3s ease;
}

header nav ul li a:hover,
header nav ul li a:focus {
    color: #0066cc;
    outline: none;
}

header nav ul li a.active {
    color: #0066cc;
    font-weight: 700;
}

.menu {
    display: grid;
    align-items: center;
    justify-content: center;
}

img {
    width: 190px;
}

h2 {
    font-size: 24px;
    font-family: 'Tahoma';
}

h3 {
    font-size: 20px;
    font-family: 'Tahoma';
}

div {
    background-color: #f5f5f5;
    padding: 50px;
    width: 930px;
    margin: 0 auto;
    border-top: 20px solid #d5d5d5;
    text-align: center;
}

p {
    text-align: center;
    line-height: 28px;
    font-family: 'Tahoma';
}

.btn {
    background-color: green;
    font-size: 14px;
    font-weight: bold;
    text-decoration: none;
    color: #fff;
    padding: 8px 15px;
    border-radius: 20px;
}

span {
    font-weight: bold;
}