Develop Reference

How Do I Close A Hamburger Menu When Clicking On The Forward Or Back Arrow On A Browser?

Below is the code I've got set up for my responsive menu. On the hamburger menu, I have some Javascript set so that the menu will close after clicking on one of the links inside of it.
Javascript:
var elements = document.getElementsByTagName('li');
var closeHamp = function() {
document.getElementsByClassName('cp_menuicon')[0].click();
};
　for (var i = 0; i < elements.length; i++) {
　　elements[i].addEventListener('click', closeHamp, false);
}
What I'd like to do is also have the hamburger menu close when navigating between pages using the forward or backward arrow on a web browser. I've played around with a few bits of Javascript but haven't been able to achieve the result I'm looking for. If anyone knows how I could close the hamburger menu when navigating between pages I'd appreciate you sharing your knowledge with me. Thank you.
Menu:
<div class="cp_cont">
<input id="cp_toggle03" type="checkbox">
<div class="cp_mobilebar">
<label for="cp_toggle03" class="cp_menuicon">
<span></span>
</label>
</div>
<label id="h-menu_black" class="cp_toggle03" for="cp_menuicon"></label>
<div id="body" class="noscroll"></div>
<header class="cp_offcm03">
<nav>
<ul style="text-align: center; margin-left: 210px; overflow: hidden;">
<li style="border-bottom: 1px solid lightgray;">Home</li>
<li style="border-bottom: 1px solid lightgray;">Blog</li>
<li style="border-bottom: 1px solid lightgray;">About This Website</li>
<li style="border-bottom: 1px solid lightgray;">Bibliography</li>
CSS:
.body {background-color: white;
font-family: sans-serif;
}
.searchbar {float: right;
}
.image {text-align: center;
}
.setsumei {margin-left: 20px;
margin-right: 20px;
}
.footer {width: 100%;
height: 40px;
text-align: center;
border-top: 1px solid black;
position: absolute;
bottom: 0;
padding: 10px;
}
.page-wrap {min-height: 100%;
margin-bottom: -40px;
}
.page-wrap:after {content: "";
display: block;
}
.site-footer,
.page-wrap:after {height: 20px;
}
.site-footer {text-align: center;
border-top: 1px solid black;
padding: 10px;
}
*,
*:before,
*:after {padding-left: 0;
margin: 0;
box-sizing: border-box;
}
ol,
ul {list-style: none;
}
a {text-decoration: none;
color: black;
}
.cp_cont {height: auto;
}
/* menu */
.cp_offcm03 {position: relative;
z-index: 5000;
top: 0;
left: 0;
right: 0;
bottom: 0;
overflow: auto;
width: 100%;
height: auto;
padding-top: 0;
-webkit-transition: transform 0.3s ease-in;
transition: transform 0.3s ease-in;
text-align: center;
color: black;
background-color: white;
}
.cp_offcm03 nav,
.cp_offcm03 ul {height: 100%;
}
.cp_offcm03 li {display: inline-block;
margin-right: -6px;
}
.cp_offcm03 a {display: block;
padding: 15px 45px;
margin-bottom: -5px;
-webkit-transition: background-color .3s ease-in;
transition: background-color .3s ease-in;
}
.cp_offcm03 a:hover {background-color: lightgray;
}
/* menu toggle */
#cp_toggle03 {display: none;
}
#cp_toggle03:checked~.cp_offcm03 {-webkit-transform: translateX(0);
transform: translateX(0);
}
#cp_toggle03:checked~.cp_container {-webkit-transform: translateX(0);
transform: translateX(0);
}
.cp_mobilebar {display: none;
}
/* content */
.cp_container {position: relative;
top: 0;
padding: 35px auto;
-webkit-transition: transform .3s ease-in;
transition: transform .3s ease-in;
}
.cp_content {margin: 0 auto;
padding: 20px;
height: 65vh;
text-align: center;
}
#media (max-width: 1130px)and (min-width: 280px) {
/* menu */
.cp_offcm03 {position: fixed;
left: -250px;
overflow-y: hidden;
width: 250px;
height: 100%;
padding-top: 40px;
color: black;
background-color: white;
z-index: 1000;
}
.cp_offcm03 nav {background: white;
border-right: 0.5px solid lightgray;
margin-left: -210px;
}
.cp_offcm03 li {display: block;
margin-right: 0;
}
.cp_offcm03 a {padding: 20px;
}
/* menu toggle */
.cp_mobilebar {display: block;
z-index: 2000;
position: relative;
top: 0;
left: 0;
padding: 0 25px;
width: 100%;
height: 40px;
background-color: white;
border-bottom: .05px solid lightgray;
}
.cp_menuicon {display: block;
position: relative;
width: 25px;
height: 100%;
cursor: pointer;
-webkit-transition: transform .3s ease-in;
transition: transform .3s ease-in;
}
.cp_menuicon>span {display: block;
position: absolute;
top: 55%;
margin-top: -0.3em;
width: 100%;
height: 0.2em;
border-radius: 1px;
background-color: black;
-webkit-transition: transform .3s ease;
transition: transform .3s ease;
}
.cp_menuicon>span:before,
.cp_menuicon>span:after {content: "";
position: absolute;
width: 100%;
height: 100%;
border-radius: 1px;
background-color: black;
-webkit-transition: transform .3s ease-in;
transition: transform .3s ease-in;
}
.cp_menuicon>span:before {-webkit-transform: translateY(-0.6em);
transform: translateY(-0.6em);
}
.cp_menuicon>span:after {-webkit-transform: translateY(0.6em);
transform: translateY(0.6em);
}
#cp_toggle03:checked+.cp_mobilebar .cp_menuicon {-webkit-transform: rotate(45deg);
transform: rotate(45deg);
}
#cp_toggle03:checked+.cp_mobilebar span:before,
#cp_toggle03:checked+.cp_mobilebar span:after {-webkit-transform: rotate(90deg);
transform: rotate(90deg);
}
#cp_toggle03:checked~.cp_offcm03 {-webkit-transform: translateX(100%);
transform: translateX(100%);
}
#cp_toggle03:checked~.cp_container {-webkit-transform: translateX(250px);
transform: translateX(250px);
}
input:checked~#h-menu_black {display: block;
opacity: .6;
}
#h-menu_black {display: none;
position: fixed;
z-index: 999;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: black;
opacity: 0;
transition: .7s ease-in-out;
}
/* content */
.cp_container {top: 60px;
height: 92vh;
text-align: center;
}
.noscroll {overflow: hidden;
position: fixed;
}
}

How Can I Close My Hamburger Menu After Clicking On A Link?

I have a hamburger menu that's made with pure CSS. It works well, but I'd like to be able to have it closed after clicking on one of the links inside it.
<div class="cp_cont">
<input id="cp_toggle03" type="checkbox">
<div class="cp_mobilebar">
<label for="cp_toggle03" class="cp_menuicon">
<span></span>
</label>
</div>
<label id="h-menu_black" class="cp_toggle03" for="cp_menuicon"></label>
<div id="body" class="noscroll"></div>
<header class="cp_offcm03">
<nav>
<ul style="text-align: center; margin-left: 210px; overflow: hidden;">
<li style="border-bottom: 1px solid lightgray;">Home</li>
<li style="border-bottom: 1px solid lightgray;">Blog</li>
<li style="border-bottom: 1px solid lightgray;">About This Website</li>
<li style="border-bottom: 1px solid lightgray;">Bibliography</li>
I've tried to add a closeNav(); function, but haven't been able to get it working. I’d like it so that if I were to go back to a page where the hamburger menu had been opened and used to navigate to another page then it would be closed. If anyone knows how I could close the menu when clicking on a link inside of it I'd appreciate you sharing your knowledge with me. Thank you.
This is my CSS.
.body{background-color: white;
font-family: sans-serif;}
.searchbar{float: right;}
.image{text-align: center;}
.setsumei{margin-left: 20px;
margin-right: 20px;}
.footer{width: 100%;
height: 40px;
text-align: center;
border-top: 1px solid black;
position: absolute;
bottom: 0;
padding: 10px;}
.page-wrap {
min-height: 100%;
/* equal to footer height */
margin-bottom: -40px;
}
.page-wrap:after {
content: "";
display: block;
}
.site-footer, .page-wrap:after {
/* .push must be the same height as footer */
height: 20px;
}
.site-footer {
text-align: center;
border-top: 1px solid black;
padding: 10px;
}
*, *:before, *:after {
padding-left: 0;
margin: 0;
box-sizing: border-box;
}
ol, ul {
list-style: none;
}
a {
text-decoration: none;
color: black;
}
.cp_cont {
height: auto;
}
/* menu */
.cp_offcm03 {
position: relative;
z-index: 5000;
top: 0;
left: 0;
right: 0;
bottom: 0;
overflow: auto;
width: 100%;
height: auto;
padding-top: 0;
-webkit-transition: transform 0.3s ease-in;
transition: transform 0.3s ease-in;
text-align: center;
color: black;
background-color: white;
}
.cp_offcm03 nav,
.cp_offcm03 ul {
height: 100%;
}
.cp_offcm03 li {
display: inline-block;
margin-right: -6px;
}
.cp_offcm03 a {
display: block;
padding: 15px 45px;
margin-bottom: -5px;
-webkit-transition: background-color .3s ease-in;
transition: background-color .3s ease-in;
}
.cp_offcm03 a:hover {
background-color: lightgray;
}
/* menu toggle */
#cp_toggle03 {
display: none;
}
#cp_toggle03:checked ~ .cp_offcm03 {
-webkit-transform: translateX(0);
transform: translateX(0);
}
#cp_toggle03:checked ~ .cp_container {
-webkit-transform: translateX(0);
transform: translateX(0);
}
.cp_mobilebar {
display: none;
}
/* content */
.cp_container {
position: relative;
top: 0;
padding: 35px auto;
-webkit-transition: transform .3s ease-in;
transition: transform .3s ease-in;
}
.cp_content {
margin: 0 auto;
padding: 20px;
height: 65vh;
text-align: center;
}
#media (max-width: 1130px)and (min-width: 280px) {
/* menu */
.cp_offcm03 {
position: fixed;
left: -250px;
overflow-y: hidden;
width: 250px;
height: 100%;
padding-top: 40px;
color: black;
background-color: white;
z-index: 1000;
}
.cp_offcm03 nav {
background: white;
border-right: 0.5px solid lightgray;
margin-left: -210px;
}
.cp_offcm03 li {
display: block;
margin-right: 0;}
.cp_offcm03 a {
padding: 20px;
}
/* menu toggle */
.cp_mobilebar {
display: block;
z-index: 2000;
position: relative;
top: 0;
left: 0;
padding: 0 25px;
width: 100%;
height: 40px;
background-color: white;
border-bottom: .05px solid lightgray;
}
.cp_menuicon {
display: block;
position: relative;
width: 25px;
height: 100%;
cursor: pointer;
-webkit-transition: transform .3s ease-in;
transition: transform .3s ease-in;
}
.cp_menuicon > span {
display: block;
position: absolute;
top: 55%;
margin-top: -0.3em;
width: 100%;
height: 0.2em;
border-radius: 1px;
background-color: black;
-webkit-transition: transform .3s ease;
transition: transform .3s ease;
}
.cp_menuicon > span:before,
.cp_menuicon > span:after {
content: "";
position: absolute;
width: 100%;
height: 100%;
border-radius: 1px;
background-color: black;
-webkit-transition: transform .3s ease-in;
transition: transform .3s ease-in;
}
.cp_menuicon > span:before {
-webkit-transform: translateY(-0.6em);
transform: translateY(-0.6em);
}
.cp_menuicon > span:after {
-webkit-transform: translateY(0.6em);
transform: translateY(0.6em);
}
#cp_toggle03:checked + .cp_mobilebar .cp_menuicon {
-webkit-transform: rotate(45deg);
transform: rotate(45deg);
}
#cp_toggle03:checked + .cp_mobilebar span:before,
#cp_toggle03:checked + .cp_mobilebar span:after {
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
}
#cp_toggle03:checked ~ .cp_offcm03 {
-webkit-transform: translateX(100%);
transform: translateX(100%);
}
#cp_toggle03:checked ~ .cp_container {
-webkit-transform: translateX(250px);
transform: translateX(250px);
}
input:checked ~ #h-menu_black {
display: block;/*カバーを表示*/
opacity: .6;
}
#h-menu_black {
display: none;
position: fixed;
z-index: 999;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: black;
opacity: 0;
transition: .7s ease-in-out;
}
/* content */
.cp_container {
top: 60px;
height: 92vh;
text-align: center;
}
.noscroll{
overflow: hidden;
position: fixed;
}

Hamburger menu doesn't collapse on click any link in mobile

I am building a website and ran across this issue.
I have a basic navbar which when viewed on mobile appears like a hamburger menu. The menu works fine. I have used pure HTML-CSS code for making this navbar. The issue is that the navbar is not closing when I click any link on the menu to navigate to a different section of the page.
HTML:
<header class="navbar-fixed-top">
<div class="container">
<nav>
<input type="checkbox" id="nav" class="hidden">
<label for="nav" class="nav-btn">
<i></i>
<i></i>
<i></i>
</label>
<div class="nav-wrapper">
<ul>
<li>HOME</li>
<li>MINT</li>
<li>COMMUNITY</li>
<li>PROJECTS</li>
<li>FAQ</li>
</ul>
</div>
</nav>
</div>
</header>
CSS
header {
text-align: right;
-webkit-transition: all .5s;
transition: all .5s;
height: 65px;}
nav {
padding: 8px;
}
nav ul {
margin-bottom: 0;
float:right;
-webkit-transition: all .5s;
transition: all .5s;
}
nav ul li {
display: inline-block;
float: left;
}
nav li {
display: inline-block;
margin: 0.75em;
}
nav ul li:last-child {
margin-right: 24px;
}
nav ul li a {
display: inline-block;
outline: none;
color: rgb(255, 255, 255);
text-transform: uppercase;
text-decoration: none;
font-size: 1.2em;
align-content: space-between;
font-weight: 600;
}
#media screen and (max-width: 864px) {
.logo {
padding:0;
}
.nav-wrapper {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: -1;
background: rgb(0, 0, 0);
opacity: 0;
transition: all 0.2s ease;
}
.nav-wrapper ul {
position: absolute;
top: 50%;
transform: translateY(-50%);
width: 100%;
}
.nav-wrapper ul li {
display: block;
float: none;
width: 100%;
text-align: left;
margin-bottom: 10px;
}
.nav-wrapper ul li:nth-child(1) a {
transition-delay: 0.2s;
}
.nav-wrapper ul li:nth-child(2) a {
transition-delay: 0.3s;
}
.nav-wrapper ul li:nth-child(3) a {
transition-delay: 0.4s;
}
.nav-wrapper ul li:nth-child(4) a {
transition-delay: 0.5s;
}
.nav-wrapper ul li:nth-child(5) a {
transition-delay: 0.6s;
}
.nav-wrapper ul li:not(:first-child) {
margin-left: 0;
}
.nav-wrapper ul li a {
padding: 10px 24px;
opacity: 0;
color: rgb(255, 255, 255);
font-size: 14px;
font-weight: 600;
letter-spacing: 1.2px;
transform: translateX(-20px);
transition: all 0.2s ease;
}
.nav-btn {
position: fixed;
right: 10px;
top: 10px;
display: block;
width: 48px;
height: 48px;
cursor: pointer;
z-index: 9999;
border-radius: 50%;
}
.nav-btn i {
display: block;
width: 20px;
height: 2px;
background: rgb(255, 255, 255);
border-radius: 2px;
margin-left: 14px;
}
.nav-btn i:nth-child(1) {
margin-top: 16px;
}
.nav-btn i:nth-child(2) {
margin-top: 4px;
opacity: 1;
}
.nav-btn i:nth-child(3) {
margin-top: 4px;
}
}
#nav:checked + .nav-btn {
transform: rotate(45deg);
}
#nav:checked + .nav-btn li {
background: #000;
transition: transform 0.2s ease;
}
#nav:checked + .nav-btn i:nth-child(1) {
transform: translateY(6px) rotate(180deg);
}
#nav:checked + .nav-btn i:nth-child(2) {
opacity: 0;
}
#nav:checked + .nav-btn i:nth-child(3) {
transform: translateY(-6px) rotate(90deg);
}
#nav:checked + .nav-btn i:nth-child(4) {
opacity: 0;
}
#nav:checked ~ .nav-wrapper {
z-index: 9990;
opacity: 1;
}
#nav:checked ~ .nav-wrapper ul li a {
opacity: 1;
transform: translateX(0);
}
.hidden {
display: none;
}
.bg-nav {
background: #000;
}
.bg-nav ul {
padding: 10px;
}
`
Sorry for the long codes
Since I am a beginner with near to no experience in JS I would like to know if there is any solution for this.
Is there any solution in CSS for this or do we need to use JS.
Any help would be appreciated

I don't think you can do it with CSS only as it would require child -> parent relation.
If you are ok to use JS you can just set "false" to the #nav checkbox
const onLinkClick = () => {
document.querySelector("#nav").checked = false; // Once link is clicked -> make #nav checkbox false thus close the menu
};
document
.querySelectorAll(".nav-wrapper a") // Grab all links
.forEach((element) => element.addEventListener("click", onLinkClick)); // Listen for click on them

Close hamburger menu with JS

how can I close my hamburger menu when clicking on link, I need it for one page navigation. Menu works fine but just need a way to close it.
I have very little knowledge about JS.
I have this in HTML and CSS, don't have any JS:
HTML in index.html file
<nav>
<div id="menuToggle">
<input type="checkbox"/>
<span></span>
<span></span>
<span></span>
<ul id="menu" class="navbar-collapse">
<li>idi na 1</li>
<li>idi na 2</li>
<li>idi na 3</li>
</ul>
</div>
</nav>
CSS in style.css file
*{
margin:0;
padding:0;
}
nav{
position:fixed;
z-index: 99999;
}
a{
text-decoration: none;
font-family: 'Lato', sans-serif;
color: #000000;
transition: color 0.3s ease;
}
a:hover{
color: #999999;
}
#menuToggle{
display: block;
position: relative;
top: 50px;
left: 50px;
z-index: 1;
-webkit-user-select: none;
user-select: none;
}
#menuToggle input{
display: block;
width: 40px;
height: 32px;
position: absolute;
top: -7px;
left: -5px;
cursor: pointer;
opacity: 0;
z-index: 2;
-webkit-touch-callout: none;
}
#menuToggle span{
display: block;
width: 33px;
height: 4px;
margin-bottom: 5px;
position: relative;
background: #000000;
border-radius: 3px;
z-index: 1;
transform-origin: 4px 0px;
transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
background 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
opacity 0.55s ease;
}
#menuToggle span:first-child{
transform-origin: 0% 0%;
}
#menuToggle span:nth-last-child(2){
transform-origin: 0% 100%;
}
#menuToggle input:checked ~ span{
opacity: 1;
transform: rotate(45deg) translate(-2px, -1px);
background: #000000;
}
#menuToggle input:checked ~ span:nth-last-child(3){
opacity: 0;
transform: rotate(0deg) scale(0.2, 0.2);
}
#menuToggle input:checked ~ span:nth-last-child(2){
opacity: 1;
transform: rotate(-45deg) translate(0, -1px);
}
#menu{
background-size:cover;
background-repeat:no-repeat;
position: absolute;
width: 100vw;
height:100vh;
margin: -77px 0 0 -50px;
padding: 50px;
padding-top: 125px;
background-color: rgba(255,255,255,1);
list-style-type: none;
-webkit-font-smoothing: antialiased;
transform-origin: 0% 0%;
transform: translate(-100%, 0);
transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0);
}
#menu li{
padding: 10px 0;
font-size: 60px;
text-align: center;
}
#menuToggle input:checked ~ ul{
transform: scale(1.0, 1.0);
opacity: 1;
}
#media only screen and (max-width:480px) {
#menuToggle input {
top: 2px;
left: -5px;
}
}
Thank you very much for any help you can provide!

Use trigger .
$('#menu > li > a').on('click', function() {
$("#menuToggle").find('input').trigger("click");
});
*{
margin:0;
padding:0;
}
nav{
position:fixed;
z-index: 99999;
}
a{
text-decoration: none;
font-family: 'Lato', sans-serif;
color: #000000;
transition: color 0.3s ease;
}
a:hover{
color: #999999;
}
#menuToggle{
display: block;
position: relative;
top: 50px;
left: 50px;
z-index: 1;
-webkit-user-select: none;
user-select: none;
}
#menuToggle input{
display: block;
width: 40px;
height: 32px;
position: absolute;
top: -7px;
left: -5px;
cursor: pointer;
opacity: 0;
z-index: 2;
-webkit-touch-callout: none;
}
#menuToggle span{
display: block;
width: 33px;
height: 4px;
margin-bottom: 5px;
position: relative;
background: #000000;
border-radius: 3px;
z-index: 1;
transform-origin: 4px 0px;
transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
background 0.5s cubic-bezier(0.77,0.2,0.05,1.0),
opacity 0.55s ease;
}
#menuToggle span:first-child{
transform-origin: 0% 0%;
}
#menuToggle span:nth-last-child(2){
transform-origin: 0% 100%;
}
#menuToggle input:checked ~ span{
opacity: 1;
transform: rotate(45deg) translate(-2px, -1px);
background: #000000;
}
#menuToggle input:checked ~ span:nth-last-child(3){
opacity: 0;
transform: rotate(0deg) scale(0.2, 0.2);
}
#menuToggle input:checked ~ span:nth-last-child(2){
opacity: 1;
transform: rotate(-45deg) translate(0, -1px);
}
#menu{
background-size:cover;
background-repeat:no-repeat;
position: absolute;
width: 100vw;
height:100vh;
margin: -77px 0 0 -50px;
padding: 50px;
padding-top: 125px;
background-color: rgba(255,255,255,1);
list-style-type: none;
-webkit-font-smoothing: antialiased;
transform-origin: 0% 0%;
transform: translate(-100%, 0);
transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1.0);
}
#menu li{
padding: 10px 0;
font-size: 60px;
text-align: center;
}
#menuToggle input:checked ~ ul{
transform: scale(1.0, 1.0);
opacity: 1;
}
#media only screen and (max-width:480px) {
#menuToggle input {
top: 2px;
left: -5px;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="menuToggle">
<input type="checkbox" />
<span></span>
<span></span>
<span></span>
<ul id="menu" class="navbar-collapse">
<li>idi na 1</li>
<li>idi na 2</li>
<li>idi na 3</li>
</ul>
</div>
Note: Don't forget to put your js code inside document.ready.
$(function() {
$('#menu > li > a').on('click', function() {
$("#menuToggle").find('input').trigger("click");
});
});

Can't get button to move on li:hover when .active

I'm a little new to javascript and used a small one to get my menu to appear en move the button accordingly but I wanted to implement submenu's. Now when I want the button to move when the submenu is activated(hovered on main li) it won't.
What am I doing wrong?
A little side note, the menu also expands (on hover 2nd li) when it's not activated that's my second question.
http://jsfiddle.net/drjvdyhb/
body {
font: 400 18px'Fjord One', sans-serif;
line-height: 1em;
background-color: #fff;
color: #c0c5ce;
}
header {
position: relative;
background-color: #2c353a;
}
header ul.nav {
overflow: auto;
margin: 0em;
padding: 0em;
}
header ul.nav li {
position: relative;
float: left;
width: 20%;
list-style: none;
}
header ul.nav li a {
display: block;
height: 30px;
opacity: 0;
font: 400 1.15em'Fjord One', serif;
line-height: 30px;
color: #848e92;
text-decoration: none;
text-align: center;
cursor: default;
-webkit-transition: all 0.25s ease;
-moz-transition: all 0.25s ease;
}
header ul.nav li:hover a {
color: #fff;
background-color: #222b2f;
}
header ul.nav li:hover ul li a {
color: #848e92;
background-color: #2c353a;
}
header ul.nav li ul li:hover a {
color: #fff;
background-color: #222b2f;
}
header ul li ul {
position: relative;
left: 0px;
padding: 0px 0px 0px;
width: 100%;
height: 100%;
-webkit-box-shadow: none;
-moz-box-shadow: none;
box-shadow: none;
display: none;
opacity: 0;
visibility: hidden;
-webkit-transiton: opacity 0.2s;
-moz-transition: opacity 0.2s;
-ms-transition: opacity 0.2s;
-o-transition: opacity 0.2s;
-transition: opacity 0.2s;
}
header ul li ul li {
display: block;
color: #fff;
}
header ul.nav li ul li {
width: 50%;
font-size: 14px;
}
header ul.nav li:hover ul {
display: block;
opacity: 1;
visibility: visible;
}
header ul.nav li:hover button.toggle-nav {
top 90px;
}
header ul li ul li a {
font: 400 1em'Fjord One', serif;
color: #848e92;
}
header.active ul.nav li a {
height: 60px;
opacity: 1;
line-height: 60px;
cursor: pointer;
}
header.active ul.nav li ul li a {
Height: 30px;
line-height: 100%;
}
button.toggle-nav {
position: absolute;
top: 30px;
left: calc(50% - 30px);
width: 40px;
height: 35px;
background-color: #38a6a6;
font: 400 1.2em'Allan', serif;
color: #fff;
border: none;
line-height: 30px;
vertical-align: middle;
outline: none;
cursor: pointer;
border-bottom-left-radius: 10px;
border-bottom-right-radius: 10px;
-webkit-transition: all 0.25s ease;
-moz-transition: all 0.25s ease;
}
button.toggle-nav:hover {
height: 50px;
}
button.toggle-nav span {
display: block;
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-webkit-transition: all 0.25s ease;
-moz-transition: all 0.25s ease;
}
header.active button.toggle-nav {
top: 60px;
background-color: #256f6f;
}
/* My try so far */
header.active ul.nav li.hvr a:hover button.toggle-nav {
top: 90px;
}
header.active button.toggle-nav span {
-webkit-transform: rotate(180deg);
-moz-transform: rotate(180deg);
}
#nav-toggle {
cursor: pointer;
padding: 5px 10px 10px 10px;
}
#nav-toggle span, #nav-toggle span:before, #nav-toggle span:after {
cursor: pointer;
border-radius: 1px;
height: 5px;
width: 20px;
background: white;
position: absolute;
display: block;
content:'';
}
#nav-toggle span:before {
top: 10px;
}
#nav-toggle span:after {
bottom: 10px;
}
#nav-toggle span, #nav-toggle span:before, #nav-toggle span:after {
transition: all 500ms ease-in-out;
}
#nav-toggle.active span {
background-color: transparent;
}
#nav-toggle.active span:before, #nav-toggle.active span:after {
top: 0;
}
#nav-toggle.active span:before {
transform: rotate(45deg);
}
#nav-toggle.active span:after {
transform: rotate(-45deg);
}

Set position: relative for button.toggle-nav and remove top: 30px;,
Have a look at this JSFiddle

try this css code
#nav-toggle {
z-index: 10000000;
position: fixed;
cursor: pointer;
padding: 5px 10px 10px 10px;
top: 0px;
}