Memasang Kode Menu Dropdown Mini
Login ke akun blog klik tombol blog baru, buat satubuah link baru   
kemudian beri nama sesuai fungsi,  klik Edit HTML pada link baru tersebut, 
hapus semua kode template ganti dengan kode blank template, yang tersedia pada sumber  berikut :  * Get Blank Template. edit background warna sesuai keinginan klik simpan selesai.
Kemudian klik entri halaman baru HTML pada link tersebut.
copy kode dibawah ini, pastekan kedalam halaman baru tersebut dan klik simpan selesai
<style class="M2010-styles">
body {background-image: url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirQVAeELBFv0lzvxLWjN-oq68HQ4CLjCcAtOusXcyGGs9fP0J5Mxjd_yBEtsJYq0HJD4sjceR_aKrzHu0bLWeFPtnCuFSY2XIw3iCnW-WWCqFNctmn5ehdkQ-we5sp8RE9_aSdWf2VE2Sn/s1600/Transparent-M2010.png);color:red;height:100%;overflow:hidden;}
body {);color:red;height:100%;overflow:hidden;} 
header {
  -o-transition-duration: 0.3s;
  -moz-transition-duration: 0.3s;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
  padding:  0px 0;
  position: fixed;
  top: 0;
  width: 100%;
  height:22px;
  text-align: center;
  font-size:  6px;
  background: linear-gradient(270deg,#003366, #b27000,#003366 );
  border-bottom:1px solid #111;
}
body {
  background-color: #53ac86;
  font: 100%/1 "Futura", sans-serif;
  margin: 0;
  padding: 0;
}
a {
  text-decoration: none;
}
nav {
  background: linear-gradient(270deg,#b27000, #003366, #b27000);
  box-shadow: 0 2px #299c6b;
  display: block;
  margin-top: 0;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}
nav a {
  color: blue;
  display: block;
  line-height: 2.5;
  text-shadow: 0 -1px rgba(30, 116, 80, 0.4);
  transition: all 150ms ease-out;
}
nav li, nav ul {
  margin: 0;
  padding: 0;
}
nav li {
  border-left: 1px dashed #2eb079;
  display: table-cell;
  list-style-type: none;
  text-align: center;
  transition: all 150ms ease-out;
  width: 25%;
}
nav li:first-of-type {
  border-left: none;
}
nav li:hover {
  background: linear-gradient(270deg,#b27000, #003366, #b27000);  
}
nav li:hover a {
  -webkit-transform: translateY(-0.125em);
  transform: translateY(-0.125em);
}
nav ul {
  display: table;
  width: 100%;
}
.dropdown {
  display: block;
  height: 0;
  margin: 0;
  min-width: 100%;
  padding: 0;
  -webkit-perspective: 350px;
  perspective: 350px;
  position: absolute;
  right: 0;
  top: 100%;
  visibility: hidden;
}
.dropdown-item {
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
   background: linear-gradient(270deg,#333111, rgba(110, 46, 20, 0.3), #333111); 
  border-top: 1px solid #222;
  border-left: none;
  display: block;
  height:34px;
  -webkit-transform-origin: 50% 0;
  transform-origin: 50% 0;
  -webkit-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-transform: rotate3d(1, 0, 0, -90deg);
  transform: rotate3d(1, 0, 0, -90deg);
  transition: all 300ms ease-in;
  width: 100%;
}
.dropdown-item .dropdown-item {
  background: linear-gradient(270deg,#333111, #b27000, #333111);   
  -webkit-transform: rotate3d(1, 0, 0, 180deg);
  transform: rotate3d(1, 0, 0, 180deg);
}
.dropdown-item .dropdown-item .dropdown-item {
  background-color: #2eb079;
  -webkit-transform: rotate3d(1, 0, 0, -180deg);
  transform: rotate3d(1, 0, 0, -180deg);
}
.dropdown-item .dropdown-item .dropdown-item .dropdown-item {
  background-color: #6cd8ab;
  -webkit-transform: rotate3d(1, 0, 0, 180deg);
  transform: rotate3d(1, 0, 0, 180deg);
}
.dropdown-item a:hover {
   background-color: rgba(255, 255, 255, 0.2);   
  -webkit-transform: none;
  transform: none;
}

.has-dropdown {
  position: relative;
}
.has-dropdown:hover .dropdown {
  height: auto;
  visibility: visible;
}
.has-dropdown:hover .dropdown .dropdown-item {
  background-color: #58d39f;
  -webkit-transform: rotate3d(1, 0, 0, 0);
  transform: rotate3d(1, 0, 0, 0);
  transition: all 1100ms cubic-bezier(1, 0, 0, 2);
} 
</style
<body>
  <nav>
  <ul>
    <li class='nav-item'>
      <a href='#'>HOME</a>
    </li>
    <li class='nav-item'>
    <div class='has-dropdown'>
        <a class='dropdown-toggle' href='#'>MENU a ▾</a>
        <div class='dropdown'>
          <div class='dropdown-item'>
            <a href='#'>MENU 1</a>
            <div class='dropdown-item'>
              <a href='#'>MENU 2</a>
              <div class='dropdown-item'>
                <a href='#'>MENU 3</a>
                <div class='dropdown-item'>
                  <a href='#'>MENU 4</a>
    </li>
    <li class='nav-item'>
      <a href='#'>MENU B</a>
    </li>
    <li class='nav-item'>
      <div class='has-dropdown'>
        <a class='dropdown-toggle' href='#'>MENU C ▾</a>
        <div class='dropdown'>
          <div class='dropdown-item'>
            <a href='#'>MENU 1</a>
            <div class='dropdown-item'>
              <a href='#'>MENU 2</a>
              <div class='dropdown-item'>
                <a href='#'>MENU 3</a>
                <div class='dropdown-item'>
                  <a href='#'>MENU 4</a>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </li>
  </ul>
</nav> 
</body>
</html>
<header> 
<h2>
<span style="color:#333111;font-size:10pt">DROPDOWN</a>  </h2>
</a>  
</div>
</header>
Code by. All Source
Edited by. Mys2010 On Codepen
If you want to directly copy  and  paste you canDownload  Menu Dropdown Gradient