.exercise-container{
  margin: 30px 10px;
  width: 100%;
  padding: 20px;
}
.exercise-container.cardio{
  background: #dfd;
}
.exercise-container.free{
  background: #ddf;
}
.exercise-container.machine{
  background: #fdd;
}

.exercise-container .title{
  font-size: 1.2em;
  font-weight: bold;
}
.exercise-container .title small{
  font-weight: lighter;
  font-size: 0.7em;
}