* {
  box-sizing: border-box;
  border-style: solid 5px;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(-45deg, #fea3aa , #f8b88b , #faf884 , #baed91 , #b2cefe , #f2a2e8 , #fea3aa);
}

/* Style the header */
header {
  background-color: #777;
  padding: 1em;
  text-align: center;
  font-size: 35px;
  color: white;
}

/* Create two columns/boxes that floats next to each other */
nav {
  float: left;
  width: 320px;
  height: 100%;
  background: #faf884;
  border-top-left-radius: 1em;
}

/* Style the list inside the menu */
nav ul {
  list-style-type: none;
  padding: 0;
}

nav ul li a {
  display: block;
  color: #000;
  padding: 1em ;
  text-decoration: none;
}

nav ul li a:hover {
  background-color: #555;
  color: white;
}

section {
  float: left;
  padding: 20px;
  max-width: 600px;
  background: linear-gradient(-45deg, #fea3aa , #f8b88b , #faf884 , #baed91 , #b2cefe , #f2a2e8 , #fea3aa);
}

article {
  position: relative;
  width: calc(100% - 2em);
  border-radius: 1em;
  padding: 20px;
  margin: 1em;
  background-color: #f1f1f1;
}

.container {
  position: relative;
  width: 100%;
  overflow: hidden;
  margin: 1em;
  padding-top: 75%; /* 16:9 Aspect Ratio */
}

.responsive-iframe {
  border-radius: 1em;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: calc(100% - 2em);
  height: 100%;
}

h1 {
  padding: 1em;
}

p {
  background-image: url(https://raw.githubusercontent.com/mdn/learning-area/master/html/multimedia-and-embedding/images-in-html/dinosaur_small.jpg);
}

/* Clear floats after the columns */

section::after {
  content: "";
  display: table;
  clear: both;
}

/* Responsive layout - makes the two columns/boxes stack on top of each other instead of next to each other, on small screens */
@media (max-width: 600px) {
  nav, article {
    width: 100%;
    height: auto;
    border-radius: 1em;
  }


}