body{
    background-color:#eee;
}

label.radio {
  cursor: pointer;
}

label.radio input {
  position: absolute;
  top: 0; 
  left: 0;
  visibility: hidden;
  pointer-events: none;
}

label.radio span {
  padding: 4px 0px;
  border: 1px solid red;
  display: inline-block;
  color: red;
  width: 100px;
  text-align: center;
  border-radius: 3px;
  margin-top: 7px;
  text-transform: uppercase;
}

label.radio input:checked + span {
  border-color: red;
  background-color: red;
  color: #fff;
}

.ans {
  margin-left: 36px !important;
}

.btn:focus {
  outline: 0 !important;
  box-shadow: none !important;
}

.btn:active {
  outline: 0 !important;
  box-shadow: none !important;
}