* {
  box-sizing: border-box;
  margin: 0;
}

body {
  font-family: 'Roboto', sans-serif;
  letter-spacing: -0.02em;
}

a {
  font-size: 18px;
  line-height: 20px;
  color: #8492a6;
  text-decoration: none;
}

ul {
  list-style-type: none;
  padding-left: 0px;
}

.tab-menu {
  max-width: 540px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.3);
  background-color: rgba(0, 0, 0, 0.05);
}

.tab-menu::after {
  clear: left;
  content: '';
  display: block;
}

.tab-menu-item {
  float: left;
  margin-right: 16px;
}

.tab-menu-item a {
  display: block;
  padding: 16px 20px;
}

.tab-menu-item.selected a {
  font-weight: bold;
  color: blue;
  border-bottom: 2px solid blue;
}