body {
  margin: 0;
  padding: 0;
}


.mets-cover {
  background: url('/FitnessJS/assets/vegetables.jpg') no-repeat center center;
  background-size: cover;
}

.calories-cover {
  background: url('/FitnessJS/assets/soup.jpg') no-repeat center center;
  background-size: cover;
}

.composition-cover {
  background: url('/FitnessJS/assets/shoes.jpg') no-repeat center center;
  background-size: cover;
}

.cardio-performance-cover {
  background: url('/FitnessJS/assets/track.jpg') no-repeat center center;
  background-size: cover;
}

.rep-max-cover {
  background: url('/FitnessJS/assets/track-rubber.jpg') no-repeat center center;
  background-size: cover;
}