* {
  margin: 0;
  padding: 0;
}

header {
  background-color: #333;
  height: 100px;
}
header .container {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.top-bar {
  list-style: none;
  display: flex;
}

.top-bar li {
  margin: 0 20px;
}
.top-bar li:first-child {
  margin-left: 0;
}