header {
  display: flex;
  justify-content: space-between;
  margin: 20px;
  font-size: large;
}

.menu {
  display: flex;
  justify-content: flex-end;
  margin: 0;
  font-size: medium;
}

.menu li {
  list-style: none;
  margin-left: 40px;
}

.main {
  margin: 10%;
}

h2 {
  margin-top: 10%;
}

hr {
  margin-bottom: 3%;
}

.cards {
  width: 100%;
  display: flex;
  justify-content: space-between;
}

.card {
  width: 23%;
  margin: 20px;
  padding: 20px;
  border: 1px solid gainsboro;
  border-radius: 10px;
}

.card:hover {
  box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.1);
}

#post {
  width: 50%;
  border-radius: 10px;
}

.tech {
  display: flex;
  padding: 0;
}

.tech li {
  list-style: none;
  background-color:rgb(243, 241, 241);
  padding: 3px;
  margin-top: 0;
  margin-right: 10px;
}

.cert {
  padding-left: 30px;
  padding-top: 10px;
}

.cert li {
  margin-bottom: 20px;
}

.awards {
  padding-left: 30px;
  padding-top: 15px;
}

.awards li {
  margin-bottom: 20px;
}