body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: lightskyblue;
}

header {
    background-color: #3498db;
    padding: 10px;
    text-align: center;
    color: #fff;
}

h1 {
    margin: 0;
    font-size: 24px;
    
}

nav {
    display: flex;
    justify-content: center;
    margin-top: 10px;
}

nav a {
    margin: 0 15px;
    text-decoration: none;
    color: #fff;
    font-weight: bold;
}

.input-container {
    max-width: 400px;
    margin: 20px auto;
    margin-top: 80px;
}

input {
    width: 70%;
    padding: 10px;
    box-sizing: border-box;
}

button {
    width: 30%;
    padding: 10px;
    box-sizing: border-box;
    background-color: #3498db;
    color: #fff;
    border: none;
    cursor: help;
    text-align: center;
}

.video-container {
    margin-top: 20px;
    max-width: 800px;
    overflow: hidden;
    position: absolute;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}