Menu Responsive Đẹp Dropdown Menu Cho Blog

Thêm code dưới vào chỗ cần hiển thị menu:

 

<nav>
<a class="responsive-menu" href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#" id="resp-menu"><i class="fa fa-reorder"></i> Menu</a>   
   <ul class="menu">
<li><a class="homer" href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#"><i class="fa fa-home"></i> HOME</a>  <ul class="sub-menu">
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 1</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 2</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 3</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 4</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 5</a></li>
</ul>
</li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#"><i class="fa fa-user"></i> ABOUT</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#"><i class="fa fa-camera"></i> PORTFOLIO</a>  <ul class="sub-menu">
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 1</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 2</a>  <ul>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 1</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 2</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 3</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 4</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 5</a></li>
</ul>
</li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 3</a>  <ul>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 1</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 2</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 3</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 4</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 5</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#"><i class="fa fa-bullhorn"></i> BLOG</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#"><i class="fa fa-tags"></i> CATEGORIES</a>  <ul class="sub-menu">
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 1</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 2</a>  <ul>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 1</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 2</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 3</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 4</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 5</a></li>
</ul>
</li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub-Menu 3</a>  <ul>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 1</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 2</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 3</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 4</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#">Sub Sub-Menu 5</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#"><i class="fa fa-envelope"></i> CONTACT</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#"><i class="fa fa-sitemap"></i> SITEMAP</a></li>
<li><a href="https://www.blogger.com/blogger.g?blogID=1410474368144410329#"><i class="fa fa-exclamation-triangle"></i> DISCLAIMER</a></li>
</ul>
</nav>

dưới đây là css:

 nav {
    display: block;
    margin-top: 100px;
    background: #374147;
    border-bottom: 4px solid #07ACEC;
}

.menu {
    display: block;
}

.menu li {
    display: inline-block;
    position: relative;
    z-index: 100;
}

.menu li:first-child {
    margin-left: 0;
}

.menu li a {
    font-weight: 600;
    text-decoration: none;
    padding: 20px 15px;
    display: block;
    color: #fff;
    transition: all 0.2s ease-in-out 0s;
}

.menu li a:hover,.menu li:hover>a {
    color: #fff;
    background: #07ACEC;
}

.menu ul {
    visibility: hidden;
    opacity: 0;
    margin: 0;
    padding: 0;
    width: 150px;
    position: absolute;
    left: 0px;
    background: #fff;
    z-index: 99;
    transform: translate(0,20px);
    transition: all 0.2s ease-out;
}

.menu ul:after {
    bottom: 100%;
    left: 20%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
    border-color: rgba(255, 255, 255, 0);
    border-bottom-color: #fff;
    border-width: 6px;
    margin-left: -6px;
}

.menu ul li {
    display: block;
    float: none;
    background: none;
    margin: 0;
    padding: 0;
}

.menu ul li a {
    font-size: 12px;
    font-weight: normal;
    display: block;
    color: #797979;
    background: #fff;
}

.menu ul li a:hover,.menu ul li:hover>a {
    background: #07ACEC;
    color: #fff;
}

.menu li:hover>ul {
    visibility: visible;
    opacity: 1;
    transform: translate(0,0);
}

.menu ul ul {
    left: 149px;
    top: 0px;
    visibility: hidden;
    opacity: 0;
    transform: translate(20px,20px);
    transition: all 0.2s ease-out;
}

.menu ul ul:after {
    left: -6px;
    top: 10%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
    border-color: rgba(255, 255, 255, 0);
    border-right-color: #fff;
    border-width: 6px;
    margin-top: -6px;
}

.menu li>ul ul:hover {
    visibility: visible;
    opacity: 1;
    transform: translate(0,0);
}

.responsive-menu {
    display: none;
    width: 100%;
    padding: 20px 15px;
    background: #374147;
    color: #fff;
    text-transform: uppercase;
    font-weight: 600;
}

.responsive-menu:hover {
    background: #374147;
    color: #fff;
    text-decoration: none;
}

a.homer {
    background: #07ACEC;
}

@media (min-width: 768px) and (max-width: 979px) {
    .mainWrap {
        width: 768px;
    }

    .menu ul {
        top: 37px;
    }

    .menu li a {
        font-size: 12px;
    }

    a.homer {
        background: #07ACEC;
    }
}

@media (max-width: 767px) {
    .mainWrap {
        width: auto;
        padding: 50px 20px;
    }

    .menu {
        display: none;
    }

    .responsive-menu {
        display: block;
        margin-top: 100px;
    }

    nav {
        margin: 0;
        background: none;
    }

    .menu li {
        display: block;
        margin: 0;
    }

    .menu li a {
        background: #fff;
        color: #797979;
    }

    .menu li a:hover,.menu li:hover>a {
        background: #07ACEC;
        color: #fff;
    }

    .menu ul {
        visibility: hidden;
        opacity: 0;
        top: 0;
        left: 0;
        width: 100%;
        transform: initial;
    }

    .menu li:hover>ul {
        visibility: visible;
        opacity: 1;
        position: relative;
        transform: initial;
    }

    .menu ul ul {
        left: 0;
        transform: initial;
    }

    .menu li>ul ul:hover {
        transform: initial;
    }
}

@media (max-width: 480px) {
}

@media (max-width: 320px) {
} 

Bước cuối là thêm js trước /body

<script type="text/javascript">
$(document).ready(function(){ 
 var touch  = $('#resp-menu');
 var menu  = $('.menu');
 
 $(touch).on('click', function(e) {
  e.preventDefault();
  menu.slideToggle();
 });
 
 $(window).resize(function(){
  var w = $(window).width();
  if(w > 767 && menu.is(':hidden')) {
   menu.removeAttr('style');
  }
 });
 
});
</script> 

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