* {
  margin: 2px;
  border-radius: 8px;
}

body {
  margin: 0;
  color: #333;
  background: #000;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
}

header {
  width: 100%;
  padding: 10px;
  text-align: left;
  background: #4CAF50;
  color: #000;
}

 h3, h4 {
  width: 100%;
  color: black;
}


h1 {
 width: 100%;
  color: #F54927;
font-weight: bold;

}

h2 {
 width: 100%;
  color: green;
font-weight: bold;
}

nav {
  width: 100%;
  padding: 10px 15px;
  background: green;
}

nav ul {
  margin: 0;
  padding: 0;
  display: flex;
  list-style: none;
}

nav li {
  position: relative; /* necessari per al submenu */
}

nav a {
  display: inline-block;
  padding: 8px 14px;
  font-weight: bold;
  color: #000;
  text-decoration: none;
}

nav a:hover {
  background: #fff;
  color: green;
}

nav ul li ul.submenu {
  display: none;
  position: absolute;
  top: 100%; /* just sota de l’element pare */
  left: 0;
  background: green;
  list-style: none;
  padding: 0;
  margin: 0;
  min-width: 220px;
  border: 1px solid #fff;
  
}

nav ul li ul.submenu li {
  display: block;
}

nav ul li ul.submenu li a {
  display: block;
  padding: 10px;
  color: #000;
}

nav ul li ul.submenu li a:hover {
  background: #fff;
  color: green;
}

nav ul li:hover > ul.submenu {
  display: block;
}





main {
  width: 70%;
  padding: 10px;
  background: #80C7FF;
  color: #000;
}

aside {
  width: 25%;
  height: 300px;
  padding: 10px;
  background: #ffcc80;
  color: #333;
}

.Correccions {
  width: 47%;
  padding: 10px;
  background: #82FF97;
  color: #000;
}

footer {
  width: 100%;
  padding: 10px;
  text-align: center;
  background: #90A4AE;
  color: #000;
}

iframe {
  width: 100%;
  height: 500px;
  border: none;
}

p {
margin-bottom: 20px;
}


ul li {
  margin-bottom: 8px; /* o el valor que vulguis */
}



table {
  width: 100%;
  max-width: 1100px;
  font-family: Arial, sans-serif;
  text-align: left;
  border-collapse: collapse;
}

th, td {
  border: 1px solid #000;
  padding: 10px;
  white-space: normal;
  word-wrap: break-word; 
vertical-align: top;
}

th {
  background-color: #A1FF8A;
  font-weight: bold;
}




caption {
width: 100%;
  color: green;
font-weight: bold;
}