body {
    background-color: lightblue;
    color: black;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
}

nav {
    background-color: blue;
    padding: 10px;
}

nav a {
    color: white;
    text-decoration: none;
    margin-right: 15px;
}

main {
    background-color: white;
    padding: 20px;
    border: 2px solid black;
    margin-top: 20px;
}

footer {
    background-color: yellow;
    padding: 10px;
    margin-top: 20px;
    text-align: center;
    border: 1px dashed red;
}

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

.card {
    background-color: lightgreen;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid darkgreen;
}

.gallery-grid img {
    width: 200px;
    margin: 10px;
    border: 3px solid orange;
}

.contact-form {
    background-color: lightpink;
    padding: 10px;
    border: 2px solid red;
}

.btn {
    background-color: red;
    color: white;
    padding: 5px 10px;
    font-size: 16px;
}

/*  This for pop up */
.popup-overlay {
    display: none;
    background-color: gray;
    padding: 20px;
    margin-top: 20px;
    text-align: center;
    color: white;
}