body {
  margin: 0;
  padding: 0px;
}


header {
  background: #787878;
  padding:20px;
}

.cbox {
  background-color: #eee;
  border: 1px solid #999;
  display: block;
  padding: 20px;
}

h {
  font-weight: bold;
  font-size: 30px;
}
div{
  margin: 20px;
}
.backBtn{

}