.tech_list {
  text-align: center;
}

.tech_list ul {
  list-style: none;
  padding: 0;
  margin-bottom: 1.7em;
}

.tech_list ul li {
  display: inline;
}

.tech_list ul li:not(:last-child) {
  margin-right: 1em;
}

.tech_list h2 {
  font-size: 1.4em;
  margin-top: 0;
}