h3{
  padding-left:20px;
  padding-top: 0px;
  padding-right:20px;
  margin-top: 12px;
  margin-left: 4px;    
}
.abs {
  padding-left:20px;
  
} 
.abstract {
  padding-left:20px;
  padding-top: 0px;
  padding-right:20px;
  text-align: justify;
 }