index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        #navbar{
            /* border: 1px solid green; */
            display: flex;
            height: 60px;
            justify-content: space-between;

        }
        #navbar>div>img{
            height: 60px;
        }
        #navsearch{
            display: flex;

        }
        #query{
            margin-top: 8px;
            width: 400px;
            padding: 5px;
            height: 25px;
        }
        #searchImg{
            margin-top: 7px;
            height: 40px;
            width: 60px;
        }
        #advertise{
            height: 350px;
            width: 100%;
        }
        #container{
           
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 20px;
         width: 95%;
            margin: auto;
           
        }
        #container>div>img{
            width: 280px;
            
        }
    </style>
</head>
<body>
    <nav id="navbar">
        <div>
            <img src="logo.png" alt="logo">
        </div>
        <div id="navsearch">
            <input type="text" id="query" placeholder="Youtube Search">
            <input id="searchImg" type="image" src="btn.png" onclick="append()">
        </div>
        <div>
            <img src="login.png" alt="signup">
        </div>    
    </nav>

    <div >

        <img id="advertise" src="adv.png" alt="">

    </div>
   



    <div id="container">

    </div>
</body>
</html>
<script src="youtube.js"></script>