.skills-and-expert {
  background-color: #333;
  color: lightgoldenrodyellow;
  margin: 20px;
}

h2 {
  text-align: center;
  font-weight: 600;
  padding: 20px;
}

.skills {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-group {
  margin: 20px 0;
  display: flex;
}

.btn-group button {
  margin: 20px 20px;
}

.btn-group img {
  width: 300px;
  height: 200px;
}