* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
}

header {
    text-align: center;
    padding: 20px;
    background-color: #4CAF50;
    color: white;
}

h1 {
    font-size: 2em;
}

.country-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 20px;
    padding: 10px;
}

.country-card {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s;
}

.country-card:hover {
    transform: translateY(-5px);
    background-color: #e9f5e9;
}

.info-section {
    display: none;
    padding: 20px;
    text-align: center;
}

.info-section.active {
    display: block;
}