Aquí el código
html,
body {
margin: 0;
`` padding: 0;
}<html>
<head>
<title>SkyWeb</title>
</head>
<body>
<!-- Menu nav -->
<nav>
<ul>
<li><a href="#structure">Day structure</a></li>
<li><a href="#team">Team</a></li>
<li><a href="#schedule">Schedule</a></li>
</ul>
</nav>
<!-- header ironsky -->
<header>
<h1><img src=https://s3-eu-west-1.amazonaws.com/ih-materials/uploads/ironhack-skydive-logo.png alt="IronSkydive Logo">IronSkydive</h1>
<h2>Let the trip begin</h2>
<!-- cite -->
<aside>"The best experience of our lives"<br> Ariel Quiñones&Gonzalo Manrique,Ironhacks Founders
</aside>
</header>
<!-- section one -->
<section id="general-information">
<!-- article one -->
<article>
<h3>Hello!</h3>
<p>Welcome to IronSkydive,the best adventure you will ever have.</p>
<a href="#learn">Learn More</a>
</article>
<!-- article two -->
<article>
<h3>About us</h3>
<p>We like a lot programming websites,but we also love to practice sport.</p>
<a href="#watch">Watch Video</a>
</article>
<!-- article three -->
<article>
<h3>Wanna join?</h3>
<p>Join our fitness program to be in good shape while learning.</p>
<a href="#user">Register</a>
</article>
</section>
<!-- section two -->
<section id="structure">
<h3>How do we structure the day?</h3>
<div>
<!-- article one section two-->
<article>
<img src=https://s3-eu-west-1.amazonaws.com/ih-materials/uploads/ironskydive-training.png>
<h4>1. Training</h4>
<p>We teach all the necessary things to jump from the plane without any kind of problem.</p>
</article>
<!-- article two section two-->
<article>
<img src=https://s3-eu-west-1.amazonaws.com/ih-materials/uploads/ironskydive-get-ready.png>
<h4>2. Get ready</h4>
<p>You are already prepared,you just need the suit and a parachute.All sizes available</p>
</article>
<!-- article three section two-->
<article>
<img src=https://s3-eu-west-1.amazonaws.com/ih-materials/uploads/ironskydive-fly.png>
<h4>3. Fly</h4>
<p>You are ready,and the plane is waiting for us in the hangar.Let´s fly!</p>
</article>
<!-- article four section two-->
<article>
<img src=https://s3-eu-west-1.amazonaws.com/ih-materials/uploads/ironskydive-jump.png>
<h4>4. Jump!</h4>
<p>You have done the most complicated.Just one setp left...jump!</p>
</article>
</div>
</section>
<!-- section three -->
<section id="team">
<h3>Team</h3>
<p>Our team collectively has 75 years of exprience.Odds are, when you jump out of the plane with these professinoals,you won´t go splat.</p>
<div>
<!-- article one -->
<article>
<h4>Harold Rothstein</h4>
<img src=https://s3-eu-west-1.amazonaws.com/ih-materials/uploads/upload_c18b1c463b80090894237a262dfdfbad.jpg>
</article>
<!-- article two -->
<article>
<h4>Susan Phillips</h4>
<img src=h ttps://s3-eu-west-1.amazonaws.com/ih-materials/uploads/upload_a18d6123a7c8e75f7e70a4e59b941093.jpg>
</article>
<!-- article three -->
<article>
<h4>Taylor Roberts</h4>
<img src=https://s3-eu-west-1.amazonaws.com/ih-materials/uploads/upload_7104a331530d1b0611da55093b7dc421.jpg>
</article>
</div>
</section>
<!-- section four -->
<section id="schedule">
<h3>Schedule</h3>
<table>
<thead>
<!-- Schedule ironsky -->
<th>Time</th>
<th>Monday</th>
<th>Tuesday</th>
<th>Wednesday</th>
<th>Thusday</th>
<th>Friday</th>
<th>Saturday</th>
</thead>
<!-- first row -->
<tbody>
<tr>
<td>09:00 - 11:00</td>
<td></td>
<td>X</td>
<td></td>
<td></td>
<td>X</td>
<td>X</td>
</tr>
</tbody>
<!-- second row -->
<tbody>
<tr>
<td>12:00 - 14:00</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td>X</td>
<td>X</td>
</tr>
</tbody>
<!-- three row -->
<tbody>
<tr>
<td>15:00 - 17:00</td>
<td></td>
<td></td>
<td>X</td>
<td>X</td>
<td>X</td>
<td>X</td>
</tr>
</tbody>
</table>
<h3>Schedule a Time Slot</h3>
</section>
<!-- footer -->
<footer>
<section>
<h5>Contact Information</h5>
<br>
<address>IronSkydive<br>
33 Rue la Fayette,<br>
75009 Paris,<br>
France<br>
+33(0)619193088
</address>
<h5>Follow Us</h5>
<ul>
<li><a href="#twi">Twitter</a></li>
<li><a href="#fb">Facebook</a></li>
<li><a href="ig">Instagram</a></li>
</ul>
</section>
</footer>
</body>
</html>Solo si le aplico el margin:0 y padding:0 a todo el css me elimina los espacios, es decir, se lo tengo que aplicar al li, todas las h, al p, etc... Entonces no sé por qué no lo hace ya que yo se lo estoy aplicando a todo el html y body, no me elimina el margin. ¿Alguna idea?
