http://busreisen.boss-art.ch/wp-content/themes/oceanwp/assets/css/style.css?ver=1.6.4

Line-from-below.css

li.menu-item > a > span {
  position: relative;
}

li.menu-item > a > span:after {
  position: absolute;
  bottom: -30%;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: rgba(0, 0, 0, 0.1);
  content: '';
  opacity: 0;
  -webkit-transition: all 0.25s ease-out;
  transition: all 0.25s ease-out;
  -webkit-transform: translateY(10px);
  -ms-transform: translateY(10px);
  transform: translateY(10px);
}

li.menu-item > a:hover > span:after {
  opacity: 1;
  -webkit-transform: translateY(0);
  -ms-transform: translateY(0);
  transform: translateY(0);
}

line-from-top.css

li.menu-item > a > span {
  position: relative;
}

li.menu-item > a > span:after {
  position: absolute;
  bottom: -30%;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: #13aff0;
  content: '';
  opacity: 0;
  -webkit-transition: all 0.25s ease-out;
  transition: all 0.25s ease-out;
  -webkit-transform: translateY(-10px);
  -ms-transform: translateY(-10px);
  transform: translateY(-10px);
}

li.menu-item > a:hover > span:after {
  height: 2px;
  opacity: 1;
  -webkit-transform: translateY(0);
  -ms-transform: translateY(0);
  transform: translateY(0);
}

line-growing.css

li.menu-item > a > span {
  position: relative;
}

li.menu-item > a > span:after {
  display: block;
  background-color: #13aff0;
  position: absolute;
  bottom: -30%;
  left: 0;
  content: '';
  width: 100%;
  height: 2px;
  visibility: hidden;
  -webkit-transform: scaleX(0);
  -ms-transform: scaleX(0);
      transform: scaleX(0);
  -webkit-transform-origin: bottom left;
      -ms-transform-origin: bottom left;
          transform-origin: bottom left;
  -webkit-transition: all 0.25s ease-out;
  transition: all 0.25s ease-out;
}
li.menu-item > a:hover > span:after {
  visibility: visible;
  -webkit-transform: scaleX(1);
  -ms-transform: scaleX(1);
      transform: scaleX(1);
}

three-dots.css

#menu-hauptmenue li a
 {
  position: relative;
}

#menu-hauptmenue li a:after {
  position: absolute;
  bottom: -10%;
  left: 50%;
  color: transparent;
  content: '•';
  text-shadow: 0 0 transparent;
  font-size: 1.2em;
  line-height: 1;
  -webkit-transition: all 0.25s ease-out;
  transition: all 0.25s ease-out;
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  transform: translateX(-50%);
  pointer-events: none;
}

#menu-hauptmenue li a:hover:after {
  color: #13aff0;
  text-shadow: 10px 0 #13aff0, -10px 0 #13aff0;
}