@charset "utf-8";

.drop_menu {
  position: relative;
  margin: 0 auto;
  width: 150px;
}

.drop_menu > li {
  float: left;
}

ul.drop_menu_second {
  visibility: hidden;
  opacity: 0;
  z-index: 1;
  width: 100%;
  padding: 5px;
}
ul.drop_menu_second li {
  padding: 5px;
}

.drop_menu > li:hover {
  transition: all .5s;
}

/* floatクリア */
.drop_menu:before,
.drop_menu:after {
  content: " ";
  display: table;
}

.drop_menu:after {
  clear: both;
}


.drop_menu > li.menu_single {
  position: relative;
}

li.drop_menu_single ul.drop_menu_second {
  position: absolute;
  transition: all .2s ease;
  background-color: #fff;
  border: 1px solid #aaa;
}

li.drop_menu_single:hover ul.drop_menu_second {
  visibility: visible;
  opacity: 1;
}