devluis · June 9, 2021 14:38 · devluis · Jul 19, 2019
diff --git a/horizontal-responsive-multilevel-menu.html b/horizontal-responsive-multilevel-menu.html
 <!DOCTYPE html>
 <html lang="en">
 <head>
 <meta charset="UTF-8">
 <title>Responsive Multilevel Horizontal Menu</title>
 <meta content="width=device-width, initial-scale=1, maximum-scale=1" name="viewport">
 <style>
 	#menu ul {
 	  margin: 0;
 	  padding: 0;
 	}

 	#menu .main-menu {
 	  display: none;
 	}

 	#tm:checked + .main-menu {
 	  display: block;
 	}

 	#menu input[type="checkbox"], 
 	#menu ul span.drop-icon {
 	  display: none;
 	}

 	#menu li, 
 	#toggle-menu, 
 	#menu .sub-menu {
 	  border-style: solid;
 	  border-color: rgba(0, 0, 0, .05);
 	}

 	#menu li, 
 	#toggle-menu {
 	  border-width: 0 0 1px;
 	}

 	#menu .sub-menu {
 	  background-color: #444;
 	  border-width: 1px 1px 0;
 	  margin: 0 1em;
 	}

 	#menu .sub-menu li:last-child {
 	  border-width: 0;
 	}

 	#menu li, 
 	#toggle-menu, 
 	#menu a {
 	  position: relative;
 	  display: block;
 	  color: #000000;
 	  /*text-shadow: 1px 1px 0 rgba(0, 0, 0, .125);*/
 	}

 	#menu, 
 	#toggle-menu {
 	  background-color: #09c;
 	}

 	#toggle-menu, 
 	#menu a {
 	  padding: 1em 1.5em;
 	}

 	#menu a {
 	  transition: all .125s ease-in-out;
 	  -webkit-transition: all .125s ease-in-out;
 	}

 	#menu a:hover {
 	  background-color: white;
 	  color: #09c;
 	}

 	#menu .sub-menu {
 	  display: none;
 	}

 	#menu input[type="checkbox"]:checked + .sub-menu {
 	  display: block;
 	}

 	#menu .sub-menu a:hover {
 	  color: #444;
 	}

 	#toggle-menu .drop-icon, 
 	#menu li label.drop-icon {
 	  position: absolute;
 	  right: 1.5em;
 	  top: 1.25em;
 	}

 	#menu label.drop-icon, #toggle-menu span.drop-icon {
 	  border-radius: 50%;
 	  width: 1em;
 	  height: 1em;
 	  text-align: center;
 	  background-color: rgba(0, 0, 0, .125);
 	  text-shadow: 0 0 0 transparent;
 	  color: rgba(255, 255, 255, .75);
 	}

 	#menu .drop-icon {
 	  line-height: 1;
 	}

 @media only screen and (max-width: 64em) and (min-width: 52.01em) {
  #menu li {
    width: 33.333%;
  }

  #menu .sub-menu li {
    width: auto;
  }
 }

 @media only screen and (min-width: 52em) {
  #menu .main-menu {
    display: block;
  }

  #toggle-menu, 
  #menu label.drop-icon {
    display: none;
  }

  #menu ul span.drop-icon {
    display: inline-block;
  }

  #menu li {
    float: left;
    /*border-width: 0 1px 0 0;*/
  }

  #menu .sub-menu li {
    float: none;
  }

  #menu .sub-menu {
    border-width: 0;
    margin: 0;
    position: absolute;
    top: 100%;
    left: 0;
    width: 12em;
    z-index: 3000;
  }

  #menu .sub-menu, 
  #menu input[type="checkbox"]:checked + .sub-menu {
    display: none;
  }

  #menu .sub-menu li {
    border-width: 0 0 1px;
  }

  #menu .sub-menu .sub-menu {
    top: 0;
    left: 100%;
  }

  #menu li:hover > input[type="checkbox"] + .sub-menu {
    display: block;
  }
 }

 </style>
 </head>
 <body>
 	<nav id="menu">
 	  <label for="tm" id="toggle-menu">Navigation <span class="drop-icon">▾</span></label>
 	  <input type="checkbox" id="tm">
 	  <ul class="main-menu clearfix">
 	    <li><a href="#">Parent Menu 1</a></li>
 	    <li><a href="#">Parent Menu 2
 	        <span class="drop-icon">▾</span>
 	        <label title="Toggle Drop-down" class="drop-icon" for="sm1">▾</label>
 	      </a>
 	      <input type="checkbox" id="sm1">
 	      <ul class="sub-menu">
 	        <li><a href="#">Item 2.1</a></li>
 	        <li><a href="#">Item 2.2
 	            <span class="drop-icon">▾</span>
 	            <label title="Toggle Drop-down" class="drop-icon" for="sm2">▾</label>
 	          </a>
 	          <input type="checkbox" id="sm2">
 	          <ul class="sub-menu">
 	            <li><a href="#">Item 2.2.1</a></li>
 	            <li><a href="#">Item 2.2.2</a></li>
 	            <li><a href="#">Item 2.2.3</a></li>
 	          </ul>
 	        </li>
 	        <li><a href="#">Item 3.4</a></li>
 	      </ul>
 	    </li>
 	    <li><a href="#">Parent Menu 3</a></li>
 	  </ul>
 	</nav>

 </body>
 </html>