<style>

h1 {
  color: black;
  font-family: arial;
  font-size: 300%;

}

h2 {
  color: black;
  font-family: arial;
  font-size: 200%;

}

h3 {
  color: black;
  font-family: arial;
  font-size: 160%;

}

h4 {
  color: black;
  font-style: italic;
  font-family: arial;
  font-size: 130%;


}

p {
  color: black;
  font-family: arial;
  font-size: 120%;
  
}

.a {
  text-align: center;
}

.b {
  text-align: left;
}

.c {
  text-align: right;
} 

.d {
  text-align: justify;
} 	



body {
  background: #555;
}

.content {
  max-width: "100%";
  margin: auto;
  background: white;
  padding: 10px;
}


table, th, td {
  border:1px solid black;
}


</style>