<!DOCTYPE html>
<html>
    <head><title>Website 2</title>
    <link rel="stylesheet" href="style2.css">
    </head>
    <body>
        <div id="navbar">
            <nav>
                <a href="#home" class="active">Home</a>
                <a href="#about" >About</a>
                <a href="#portfolio" >Portfolio</a>
                <a href="#contact" >Contact</a>
            </nav>
        </div>
        <div id="wrapper">
            <div id="home" class="page">
                <div class="jumbotron">
                    <h2>Welcome to My Site</h2>
                    <h3>This is the best website anywhere!</h3>
                </div>
            </div>
            <div id="about" class="page">
                <h2>About</h2>
                <div class="row">
                    <div class="col">
                        <div class="main">ONE</div>
                    </div>
                    <div class="col">
                        <div class="main">Two</div>
                    </div>
                    <div class="col">
                        <div class="main">Three</div>
                    </div>

                    <div class="col">
                        <div class="main">Four</div>
                    </div>
                </div>
            </div>
            <div id="portfolio" class="page">
                <h2>Portfolio</h2>
            </div>
            <div id="contact" class="page">
                <h2>Contact</h2>
            </div>
            <footer>
                <h2>Copyright .....</h2>
            </footer>
        </div>
        <script src="app2.js"></script>
    </body>
</html>


body{
    color:#222;
}
#wrapper{
    background-color: #ddd;
}
#navbar {
    position: fixed;
    top:0;
    left:0;
    height:60px;
    background-color: black;
    display: block;
    width:100%;
    z-index: 10;
}

#navbar nav, .row{
    display: flex;
}

#navbar nav a{
    flex:0 0 25vw;
    text-align: center;
    font-size: 2em;
    color:#eee;
    text-decoration: none;
    height:60px;
    line-height: 2em;
    cursor:pointer;
}
#navbar nav a:hover{
    background-color:#222;
    color:white;
}


#home{
    background-image: url('https://lorempixel.com/output/abstract-q-c-640-480-3.jpg');
    background-size: cover;
}

.page{
    height: auto;
    min-height:100vh;
    padding: 60px 10px;
    background-color: #eee;
}
.jumbotron{
    background-color: rgba(255,255,255,0.5);
    width:80%;
    margin:100px auto;
    border: 5px solid white;
    text-align: center;
    border-radius: 10px;
    padding:20px;
}
.jumbotron h2{
    text-transform: uppercase;
    font-size: 3em;
    color:black;
}
.jumbotron h3{
    font-size: 2em;
    color:#222;
}

.col{
    flex:1;
    border: 1px solid #ccc;
    padding: 10px;
}

.main{
    background-color: white;
    min-height: 60vh;
    padding:10px;
    font-size: 1.2em;
}


.page > h2{
    text-transform: uppercase;
    text-align: center;
    border-bottom: 2px solid black;
    padding:8px;
    font-size: 3em;
}



@media all and (max-width:640px){
    #navbar nav a{
        font-size: 1.2em;
        height:30px;
    }
    #navbar{
        height:30px;
    }
    .row{
        flex-direction: column;
    }
}