.container {
    padding: 20px;
}

h2 {
    margin-bottom: 5px;
}

input[type="text"],
input[type="email"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.grid-item img {
    width: 100%;
}

.ad {
    height: 200px;
    background-color: #f0f0f0;
    margin-bottom: 20px;
}

.navigation {
    display: flex;
    justify-content: space-between;
}

button {
    padding: 10px 20px;
}