* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
}

/* Top box */
.top-box {
    position: sticky;
    top: 0;
    left: 0;
    width: 200px;
    height: 200px;
    background-color: red;
    z-index: 20;
}

/* Navigation Bar */
.nav-bar {
    position: sticky;
    top: 0;
    width: 100%;
    height: 70px;
    background-color: black;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

/* Dropdown menus */
.dropdown {
    position: relative;
    margin: 0 15px;
}

.dropbtn {
    background-color: black;
    padding: 10px;
    border: none;
    cursor: pointer;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: black;
    min-width: 120px;
    box-shadow: 0px 4px 6px rgba(0,0,0,0.2);
    padding: 10px;
}

.dropdown-content img {
    width: 100%;
    height: auto;
    display: block;
    margin-bottom: 5px;
}

.dropdown:hover .dropdown-content {
    display: block;
}

/* Stripe section */
.stripe {
    position: sticky;
    top: 70px;
    width: 100%;
    height: 10px;
    background-color: #3f0;
    z-index: 7;
}

/* Iframe container */
.iframe-container {
    position: relative;
    z-index: 0;
    width: 100%;
    height: calc(100vh - 270px); /* Adjusting for sticky elements */
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
}