body {
  background-color: #24c7a0;
  border: 2px #097d6b;
  border-radius: 16px;

  font-family: sans-serif;

  margin-left: auto;
  margin-right: auto;
  max-width: 1024px;
  min-width: 256px;
  padding-bottom: 24px;
  padding-top: 8px;
  padding-left: 24px;
  padding-right: 24px;
}

@media all and (min-width: 1300px) {
  header {
    clear: inherit;
  }
  article {
    float: left;
    width: 50%;
  }
}
aside {
  float: left;
  padding-left: 24px;
  width: 34%;
}
footer {
  clear: both;
}

nav ul {
  list-style-type: none;
  background-image: url(images/Space.jpg);
  border: 4px solid #000e0e;
}
nav ul {
  border-radius: 10px;
  font-family: sans-sherif;
  font-weight: bold;
  padding: 16px;
}
nav ul li {
  display: inline;
  border-right: 2px solid #097d6b;
  padding-right: 8px;
  padding-left: 8px;
}
nav ul li:last-child {
  border-right: none;
}
nav ul li a {
  text-decoration: none;
  color: aqua;
}
nav ul {
  color: aqua;
}

p.top-tip {
  border: 4px solid #000e0e;
  border-radius: 10px;
  padding: 16px;
  background-color: #c5ebfb;
}
p.top-tip::before {
  color: Black;
  font-weight: bold;
}

html {
  box-sizing: border-box;
}
:before,
:after {
  box-sizing: inherit;
}
html {
  background-image: url(images/Space.jpg);
}

body {
  background-color: #24c7a0;
  color: #111111;
  font-family: sans-serif;
  margin-left: auto;
  margin-right: auto;
  max-width: 1024px;
  min-width: 256px;
  padding-left: 70px;
  padding-right: 70px;
}

div.information {
  background-color: #097d6b;
  margin-bottom: 24px;
  min-height: 320px;
  padding-left: 24px;
  padding-right: 24px;
  border-radius: 24px;
  border: 2px solid black;
}
header h1 {
  font: bold;
  font-family: monospace;
  font-size: 60px;
  color: black;
}

div.computer {
  background-color: antiquewhite;
  padding-left: 20px;
  padding-right: 20px;
  padding-bottom: 20px;
  border: solid 2px #6b6d65;
  border-radius: 25px;
  #introscreen {
    border-radius: 50px;
    width: 990px;
    height: auto;
  }
}

header {
  background-color: none;
}
nav {
  background-color: none;
}
artical {
  background-color: #ffd239;
}
section {
  background-color: none;
}
aside {
  background-color: none;
}
footer {
  background-color: #1eaddf;
}