.report{
  box-sizing: border-box;
}

.nav {
  text-align: center;
  display: flex;
  justify-content: normal;
  position: relative;
  overflow: hidden;
  font-size: 15px;
  /*font-weight: bold;*/
  font-weight: bold;
}

.nav a:hover{
  text-decoration: none;
}

.nav a {
  color: #000000;
  text-decoration: none;
  text-align: center;
  transition: .3s;
  width: 120px;
  height: 40px;
  line-height: 40px;
  position: relative;
}

.tabBottom {
  position: relative;
  float: left;
  width: 120px;
  background-color: #4c9ff4;
  height: 2px;
  margin-top: 2px;
}

@media (max-width: 580px) {
  .nav {
    overflow: auto;
  }
}

li{
  list-style: none;
}