Can't hide navigation bar using only CSS and HTML - html

Question

I am working on the Free Code Camp project for which you need to make a product landing page.
I have everything that I want already except for two things.
The navigation bar goes behind the hero header image
When the user scrolls down, I want the navigation bar to be hidden – it currently does not do this.
Here is my code:
#import "https://fonts.googleapis.com/css?family=Lato:400,700";
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background-color: #eee;
font-family: 'Lato', sans-serif;
}
#page-wrapper {
position: relative;
}
li {
list-style: none;
}
a {
color: #000;
text-decoration: none;
}
/** global classes styling **/
.container {
max-width: 1000px;
width: 100%;
margin: 0 auto;
}
.btn {
padding: 0 20px;
height: 40px;
font-size: 1em;
font-weight: 900;
text-transform: uppercase;
border: 3px black solid;
border-radius: 2px;
background: transparent;
cursor: pointer;
}
.grid {
display: flex;
}
header {
position: fixed;
top: 0;
min-height: 75px;
padding: 0px 20px;
display: flex;
justify-content: space-around;
align-items: center;
background-color: #eee;
}
#media (max-width: 600px) {
header {
flex-wrap: wrap;
}
}
.logo {
width: 60vw;
}
#media (max-width: 650px) {
.logo {
margin-top: 15px;
width: 100%;
position: relative;
}
}
.logo>img {
width: 100%;
height: 100%;
max-width: 300px;
display: flex;
justify-content: center;
align-items: center;
text-align: center;
margin-left: 20px;
}
#media (max-width: 650px) {
.logo>img {
margin: 0 auto;
}
}
nav {
font-weight: 400;
background-color: white;
}
#media (max-width: 650px) {
nav {
margin-top: 10px;
width: 100%;
display: flex;
flex-direction: column;
align-items: center;
text-align: center;
padding: 0 50px;
transition: top 0.1s;
/* Transition effect when sliding down (and up) */
}
nav li {
padding-bottom: 5px;
}
}
nav>ul {
width: 35vw;
display: flex;
flex-direction: row;
justify-content: space-around;
}
#media (max-width: 650px) {
nav>ul {
flex-direction: column;
}
}
#hero {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
text-align: center;
height: 300px;
margin-top: 50px;
}
#hero>h2 {
margin-bottom: 20px;
word-wrap: break-word;
}
#hero input[type="email"] {
max-width: 275px;
width: 100%;
padding: 5px;
}
#hero input[type="submit"] {
max-width: 150px;
width: 100%;
height: 30px;
margin: 15px 0;
border: 0;
background-color: #f1c40f;
}
#hero input[type="submit"]:hover {
background-color: orange;
transition: background-color 1s;
}
#media (max-width: 650px) {
#hero {
margin-top: 120px;
}
}
#features {
margin-top: 30px;
}
#features .icon {
display: flex;
align-items: center;
justify-content: center;
height: 125px;
width: 20vw;
color: darkorange;
}
#media (max-width: 550px) {
#features .icon {
display: none;
}
}
#features .desc {
display: flex;
flex-direction: column;
justify-content: center;
height: 125px;
width: 80vw;
padding: 5px;
}
#media (max-width: 550px) {
#features .desc {
width: 100%;
text-align: center;
padding: 0;
height: 150px;
}
}
#media (max-width: 650px) {
#features {
margin-top: 0;
}
}
#aboutOurApp {
margin-top: 50px;
display: flex;
justify-content: center;
}
#aboutOurApp>iframe {
max-width: 560px;
width: 100%;
}
#pricing {
margin-top: 50px;
display: flex;
flex-direction: row;
justify-content: center;
}
#aboutOurCompany {
margin-top: 1px;
display: flex;
flex-direction: row;
justify-content: center;
}
.product {
display: flex;
flex-direction: column;
align-items: center;
text-align: center;
width: calc(100% / 3);
margin: 10px;
border: 1px solid #000;
border-radius: 3px;
}
.product>.level {
background-color: #ddd;
color: black;
padding: 15px 0;
width: 100%;
text-transform: uppercase;
font-weight: 700;
}
.product>h2 {
margin-top: 15px;
}
.product>ol {
margin: 15px 0;
}
.product>ol>li {
padding: 5px 0;
}
.product>button {
border: 0;
margin: 15px 0;
background-color: #f1c40f;
font-weight: 400;
}
.product>button:hover {
background-color: orange;
transition: background-color 1s;
}
#media (max-width: 800px) {
#pricing {
flex-direction: column;
}
.product {
max-width: 300px;
width: 100%;
margin: 0 auto;
margin-bottom: 10px;
}
}
footer {
margin-top: 30px;
background-color: white;
padding: 20px;
}
footer>ul {
display: flex;
justify-content: flex-end;
}
footer>ul>li {
padding: 0 10px;
}
footer>span {
margin-top: 5px;
display: flex;
justify-content: flex-end;
font-size: 0.9em;
color: #444;
}
body {
background-color: white;
}
.hero-image {
/* Use "linear-gradient" to add a darken background effect to the image (photographer.jpg). This will make the text easier to read */
background-image: url("https://collectivecloud.org/wp-content/uploads/2019/12/iphone-410324_1280-1024x682.jpg");
/* Set a specific height */
height: 900px;
width: 1920px;
max-width: 100%;
/* Position and center the image to scale nicely on all screens */
background-position: center;
background-repeat: no-repeat;
background-size: cover;
position: relative;
}
.hero-text {
text-align: center;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
color: white;
font-size: 50px;
}
.hero-text button {
border: none;
outline: 0;
display: inline-block;
padding: 10px 25px;
color: black;
background-color: #ddd;
text-align: center;
cursor: pointer;
}
.hero-text button:hover {
background-color: #555;
color: white;
}
<div id="page-wrapper">
<header id="header">
<div class="logo">
<img id="header-img" src="https://collectivecloud.org/wp-content/uploads/2019/07/image-1-350x200.png" alt="Collective Cloud logo (This is really my company by the way ust in case)" />
</div>
<nav id="nav-bar">
<ul>
<li><a class="nav-link" href="#features">Features</a></li>
<li><a class="nav-link" href="#aboutOurApp">About Our App</a></li>
<li><a class="nav-link" href="#pricing">Pricing</a></li>
</ul>
</nav>
</header>
<div class="container">
<section id="hero" class="hero-image">
<div class="full-width">
<div class="hero-text">
<h1>Auto Build Websites</h1>
<p>Best app out there
</p>
<p style="padding: -100px;">
</div>
</div>
</div>
</section>
<p style="padding: 30px;">
<div class="container" id="features">
<section id="features">
<div class="grid" id="features">
<img src="https://cdn2.iconfinder.com/data/icons/weather-2-4/100/Weather_Set-07-512.png" height="200px" width="200" />
<div class="desc">
<h2 style="color: #0ac0ed;">SEO Optimization</h2>
<p>
Increases the quality and quantity of website traffic by increasing the visibility of a website or a web page to users of a web search engine
</p>
</div>
</div>
<div class="grid">
<img src="https://cdn2.iconfinder.com/data/icons/weather-2-4/100/Weather_Set-07-512.png" height="200px" width="200" />
<div class="desc">
<h2 style="color: #0ac0ed;">Responsive Design</h2>
<p>
Responsive web design is an approach to web design that makes web pages render well on a variety of devices and window or screen sizes.
</p>
</div>
</div>
<div class="grid">
<img src="https://cdn2.iconfinder.com/data/icons/weather-2-4/100/Weather_Set-07-512.png" height="200px" width="200" />
<div class="desc">
<h2 style="color: #0ac0ed;">24/7 Support</h2>
<p>
We provide 24/7 full support to our customers who are always looking to improve their business.
</p>
</div>
</div>
<p style="padding: 30px;">
</section>
<section id="aboutOurCompany">
<img src="https://collectivecloud.org/wp-content/uploads/2019/07/image-1-350x200.png" width="350" height="200" alt="image-1" title="image-1" padding:50px>
<p>We at Collective Cloud, LLC offer a range of services that will improve your business and help your business have a better internet presence. We offer a pro website with features tailored to your business that will give you a competing edge in
your industry.</p>
</section>
<p style="padding: 30px;">
<section id="pricing">
<div class="product" id="tenor">
<div class="level" style="background-color: #3aa8fc;">Free App</div>
<h2>FREE</h2>
<ol>
<li>Contains Ads</li>
<li>Restricted Functionality</li>
<li>No Social Media</li>
</ol>
<button class="btn">Select</button>
</div>
<div class="product" id="bass">
<div class="level" style="background-color: #3aa8fc;">Paid App</div>
<h2>$100</h2>
<ol>
<li>No Ads</li>
<li>Full functionality</li>
<li>Can Upgrade</li>
</ol>
<button class="btn">Select</button>
</div>
<div class="product" id="valve">
<div class="level" style="background-color: #3aa8fc;">Pro App</div>
<h2>$200</h2>
<ol>
<li>No Ads</li>
<li>Premium Functionalities</li>
<li>Code-Level Support</li>
</ol>
<button class="btn">Select</button>
</div>
</section>
<section id="aboutOurApp">
<div id="video" style="text-align: center;">
<p style="padding: 30px;">
<h1>Checkout How it Works</h1>
<p style="padding: 90px;">
<iframe width="560" height="315" src="https://www.youtube.com/embed/MWV45qb9nCQ" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>
</section>
<section id="hero">
<h1>Best Website Development App in the World</h1>
<h2>Don't miss out on any updates!</h2>
<form id="form" action="https://www.freecodecamp.com/email-submit">
<input name="email" id="email" type="email" placeholder="Subscribe Now" required />
<input id="submit" type="submit" value="Get Started" class="btn" />
</form>
</section>
<footer style="align-content: center;">
<ul>
<li>Privacy</li>
<li>Terms</li>
<li>Contact</li>
<li>About Us</li>
</ul>
<span>Copyright 2020, Collective Cloud, LLC</span>
</footer>
</div>
</div>

Answer 1

in your CSS add
position: relative;
left: -14px;
or just use
overflow: hidden; //it won't show at all
overflow: auto; //scrollbar will only show when content is more