body {
  background-color:pink;

}

h1 {
  color: red;
  text-align: center;

}
<style>
p {
  font-size: 20px;
  color:#000ff

 h1 {
  color: clont;
  text-align: center;
    

h1 {
  color: blue;
  text-align: center;

h4 {
  color: blue;
  text-align: center;
  
 }

h1 {
  color: rel;
  text-align: center;
 
  <h1 style ="color: red">this aheading </h2>