.header {
  background-color: transparent;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
}
.header .nav .n-item {
  border-bottom: 2px solid transparent;
}
.b-box {
  overflow: hidden;
}
.b-box img {
  float: left;
  width: 100%;
}