/*master file*/
body {
  margin:15px;
  background-color:chocolate;
  text-align:center;
}
.main_header {
  border:2px solid black;
  padding:15px;
  background-color:Brown;
}
.main_content {
  background-color:BurlyWood;
  border:1px solid black;
  padding:15px;
  margin-top:20px;
}
b {
  margin-bottom:15px;
}
.section_content {
  background-color:SaddleBrown;
  border:1px solid black;
  padding:15px;
  margin:30px;
}