#qrDiv {
  padding: 35px;
  height: 320px; 
  margin: 0 auto;

}
#defaultImg{
  width: 100%;
  padding: 40px;
  z-index : -1;
}
canvas, .canvas{
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}
img{
  width: 250px;
  margin: 0 auto;
  display: block;
}
.btn-selected {
  color: #fff;
  /* selected colour */
  background-color: #fe0000;
  border-color: #fe0000;
  padding: 10px;
  margin-top: 15px;
  margin-bottom: 15px;
}
.btn-option {
  /* text colour */
  color: #999999;
  /* selected colour */
  background-color: #f2f2f2;
  border-color: #f2f2f2;
  padding: 10px;
  margin-top: 15px;
  margin-bottom: 15px;
}
.btn.focus, .btn:focus {
  outline: 0;
  box-shadow: none
}

.btn{
  font-size: 28px;
  border-radius: 18px;
}
.btn:hover {
  color: #ffff;
}
.jumbotron{
  background-color: #ffffff;
  padding: 15px 0;
}
#optionList {
  margin-top: 370px;
}
#optionList .text-center{
  padding-left: 20px;
  padding-right: 20px; 
}