menu.css

body {
    margin:0;
    padding: 0;
    box-sizing: border-box;
}
.wosaMenu {
  font-family: Verdana,sans-serif;
  font-size: 12px;
  background-color: black;
  box-shadow: 1px 1px 4px 0 rgba(0,0,0,.1);
  position: relative;
  width: 100%;
  z-index: 3;
}
.wosaMenu .wosa-logo {
  color: #fff;
  display: block;
  float: right;
  font-size: 1.3em;
  padding: 12px 20px;
  text-decoration: none;
}
.menu-wrapper {
  background: #414141;
  height: 45px;
  line-height: 45px;
  width: 100%;
}
.wosaMenu .wosa-logo{
  line-height: 1;
}
/* menu icon */
.wosaMenu .menu-icon {
  float: right;
  padding: 22px 22px;
  position: relative;
  user-select: none;
  cursor: pointer;
}
.wosaMenu .menu-icon .navicon {
  background: #fff;
  display: block;
  height: 2px;
  position: relative;
  transition: background .2s ease-out;
  width: 18px;
}
.wosaMenu .menu-icon .navicon:before,
.wosaMenu .menu-icon .navicon:after {
  background: #fff;
  content: '';
  display: block;
  height: 100%;
  position: absolute;
  transition: all .2s ease-out;
  width: 100%;
}
.wosaMenu .menu-icon .navicon:before {
  top: 5px;
}
.wosaMenu .menu-icon .navicon:after {
  top: -5px;
}
/* menu btn */
.wosaMenu .menu-btn {
  display: none;
}
.wosaMenu .menu-btn:checked ~ .menu-icon .navicon {
  background: transparent;
}
.wosaMenu .menu-btn:checked ~ .menu-icon .navicon:before {
  transform: rotate(-45deg);
}
.wosaMenu .menu-btn:checked ~ .menu-icon .navicon:after {
  transform: rotate(45deg);
}
.wosaMenu .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:before,
.wosaMenu .menu-btn:checked ~ .menu-icon:not(.steps) .navicon:after {
  top: 0;
}
/* Dropdown CSS menus from: https://webcodeflow.com/responsive-navbar-with-dropdown/ */
#navbar {
  float:left;
  clear:none;
  position: absolute;
  z-index: 100;
  padding-left: 5px;
  line-height: 1;
  visibility: visible;
  color: #fff
}
#navbar ul {
  list-style: none;
  margin: 0px;
  padding: 0px;
}
#navbar ul li {
  color: inherit;
  display: inline-block;
  position: relative;
  margin-bottom: 0px;
}
#navbar ul li a {
  color: inherit;
  text-decoration: none;
  display: block;
  padding: 1rem;
}
/* Hide Nested ul By Default */
#navbar ul li ul {
  display: none;
}
#navbar ul li:hover {
  background-color: dimgray;
  color: #fff;
}
#navbar ul li:hover a {
  color: #fff;
}
/* Nested Dropdown Show */
#navbar ul li:hover ul {
  display: block;
  position: absolute;
  left: 0;
  width: 200px;
}
#navbar ul li:hover ul li {
  display: block;
  background-color: #414141;
}
#navbar ul li:hover ul li a {
  color: #fff;
}
#navbar ul li:hover ul li:hover {
  background-color: dimgray;
  color: inherit;
}
#navbar ul li:hover ul li span {
  float: right;
  color: #fff;
  background: blue;
  text-align: center;
  font-size: 0.8rem;
  border-radius: 5px;
}
#navbar ul li:hover ul li:hover span {
  background: #fff;
}

/* responsive: small */
@media only screen and (max-width: 800px){
  #navbar {
    display:block;
    width: 100%;
    border-top: 1px solid dimgray;
    position: absolute;
    margin-top: 45px;
    float:left;
    padding-left: 0px;
    visibility: hidden;
    color: black;
  }
  #navbar ul li {
    display: block;
  }
  #navbar ul li:hover ul {
    width: 100%;
    position: relative;
  }
  .wosaMenu .wosa-logo{
    line-height: 1;
    float:left; 
  }
  #navbar ul{
    background-color: lightgray;
    line-height: 1;
    display: block;
  }
  #navbar li {
    border-bottom: 1px solid dimgray;
  }
  #navbar li a {
    color: #000;
    display: inline-block;
  }
}
/* responsive: big */
@media only screen and (min-width: 800px) {
  .wosaMenu .menu {
    clear: none;
    float: right;
    max-height: none;
  }
  .wosaMenu .menu-icon {
    display: none;
  }
}