/* Universal selector to reset default margins and padding */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box; /* Ensures padding and borders are included in element's total width/height */
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    background-color: #f4f4f9; /* Light grey background */
    color: #333;
}

.who {
    font-family: 'Times New Roman', serif;
    font-size: 20px;
    color: #333;}
.url {
    font-family: 'Verdana', sans-serif;
    font-size: 22px;
    color: #333;}

.container {
    width: 80%;
    margin: 0 auto;
    overflow: auto;
    padding: 3px 0;
}

header {
    background-color: #ff6347; /* Vibrant Coral */
    color: white;
    padding-top: 10px;
    min-height: 50px;
    border-bottom: #e84949 3px solid;
}

.hero-section {
    padding: 25px 0;
    text-align: center;
    background: #4a90e2; /* Bright Blue */
    color: white;
    margin-top: 20px;
    border-radius: 10px;
}

.hero-section h2 {
    font-size: 3em;
    margin-bottom: 10px;
}

.hero-section p {
    font-size: 2em;
    margin-bottom: 20px;
}

.card-section {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    gap: 20px;
}

.card {
    flex: 1;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    color: white;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card-1 {
    background-color: #f5a623; /* Orange */
}

.card-2 {
    background-color: #9013fe; /* Purple */
}

.card-3 {
    background-color: #50e3c2; /* Teal */
}

.card h4 {
    margin-bottom: 10px;
    font-size: 2em;
}

footer {
    margin-top: 40px;
    text-align: center;
    background-color: #333; /* Dark background for contrast */
    color: white;
    padding: 10px 0;
}

/* Basic responsiveness for smaller screens */
@media (max-width: 768px) {
    .container {
        width: 95%;
    }

    header h1, nav {
        float: none;
        text-align: center;
    }

    .card-section {
        flex-direction: column;
    }
}