body {
  background-color: black;
}

h3 {
  color: darkgreen;
}

h3.right {
  display: block;
  margin-left: 1100;
  margin-right: 100;
  width: 50%;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

p30 {
  color: darkgreen;
  text-align: center;
}

p20 {
  color: darkgreen;
  text-align: left;
}

p10 {
  color: darkgreen;
  text-align: right;
}

p {
  color: green;
  font-family: verdana;
  font-size: 10px;
}

p.small {
  line-height: 0.35;
}

p.center {
  display: block;
  margin-left: 600px;
  margin-right: 100px;
  width: 50%;
}

box {
  font-size: 18px;
  margin-top: 100px;
  margin-bottom: 100px;
  margin-right: 100px;
  margin-left: 525px;
  width: 320px;
  padding: 10px;
  border: 5px solid green;
}

div {
  font-size: 18px;
  color: green;
  font-family: Open+Sans;
}

div.center {
  display: block;
  margin-left: 600px;
  margin-right: 100px;
  width: 50%;
}


revad {
  margin: auto;
  font-size: 18px;
  color: lightgreen;
  text-align: left;
  font-family: Open+Sans;
}

http {
  color: darkgreen;
  text-align: center;
}


s4 {
  color: darkgreen;
  text-align: left;
}


s5 {
  color: darkgreen;
  text-align: right;
}