/* (A) AUTOCOMPLETE WRAPPER */
.acWrap {
  display: inline-block; /* Or block if you like */
  position: relative;
}

/* (B) SUGGESTIONS */
.acWrap .acSuggest {
  position: absolute;
  top: 100%; left: 0;
  z-index: 9;
  width: 100%;
  background: #fff;
  border: 1px solid #eee;
  display: none;
}
.acWrap .acSuggest {
  list-style: none;
  padding: 0;
  margin: 0;
}
.acWrap .acSuggest li {
  padding: 10px;
}
.acWrap .acSuggest li:hover {
  background: #d9e7ff;
  cursor: pointer;
}