i use firefox as default browser and i never had problem with animations and css in general everything worked fine, but i noticed that in chrome if i have hover effect that has more than one animation, in chrome animations happen in order instead of simultaneously. how can i fix that problem? also the input slider i tried to make it vertical ( works fine in firefox but in chrome it doesn't work at all.
here is the github pages of the page
* {
box-sizing: border-box;
user-select: none;
}
html,
body,
#root {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
body {
background: #bf42f5;
}
#keyframes fade-in {
from {
opacity: 0;
}
to {
opacity: 1;
}
}
canvas {
opacity: 0;
touch-action: none;
animation: fade-in 1s ease 0.5s forwards;
}
.nav{
position: fixed;
opacity: 1;
z-index: 10;
top: 0px;
left: 0px;
min-width: 100%;
}
.nav-list{
list-style: none;
font-size: 1.6rem;
font-family: 'Courier New', Courier, monospace;
color: #f0f0f0;
display: flex;
justify-content: center;
padding: 0;
}
.nav-list>li{
padding-right: 10px;
opacity: 0.8;
}
.nav-list>li:hover{
transition: all 0.4s ease;
opacity: 1;
cursor: pointer;
scale: 1.11;
padding-bottom: 100px;
}
#media (max-width:480px) {
.nav-list{
flex-direction: column;
align-items: flex-end;
/* transform: translateX(1000px); */
}
.nav-list>li{
padding-left: 5px;
}
.nav-list>li:hover{
padding-top:5px;
padding-bottom:5px;
padding-left: 15px;
scale: 1.05;
}
}
/*slider*/
.boring-text{
position: fixed;
left: 5%;
top: 25%;
}
.boring-text>h1{
font-size: clamp(2rem, 10vw, 5rem);
font-family: 'Sono', sans-serif;
color: #ffffff9a;
pointer-events: none;
font-weight: 200;
max-width: 5ch;
}
.boring-text>h3{
font-family: 'Marhey', cursive;
color: #ffffff92;
position: fixed;
right: 10px;
bottom: 5%;
}
.boring-text>h4{
font-family: 'Sono', sans-serif;
color: #ffffffba;
}
.slider-wrapper{
position: fixed;
right: 20px;
bottom: 10%;
}
.slider {
writing-mode: bt-lr; /* IE */
-webkit-appearance: slider-vertical; /* Chromium */
-webkit-appearance: none;
width: 5px;
height: 255px;
background: #d3d3d3;
outline: none;
opacity: 0.5;
-webkit-transition: .2s;
transition: opacity .2s;
}
.slider:hover {
opacity: 0.8;
}
.slider::-webkit-slider-thumb {
-webkit-appearance: none;
appearance: none;
width: 25px;
height: 25px;
background: #ffffff;
cursor: pointer;
border-radius: 50%;
}
.slider::-moz-range-thumb {
width: 25px;
height: 25px;
background: #ffffff;
cursor: pointer;
border-radius: 50%;
}
/*slider*/
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="theme-color" content="#000000">
<link rel="manifest" href="%PUBLIC_URL%/manifest.json">
<link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
<link href="https://fonts.googleapis.com/css2?family=Marhey:wght#300;400&family=Sono:wght#200;400;600&display=swap" rel="stylesheet">
<link rel="stylesheet" href="styles.css">
<title>LandingPAGE</title>
</head>
<body>
<noscript>
You need to enable JavaScript to run this app.
</noscript>
<div class='nav'>
<div class='nav-wrapper'>
<ul class='nav-list'>
<li>Shop</li>
<li>Work</li>
<li>
apple{/* <FontAwesomeIcon icon="apple" /> */}
</li>
<li>Contact</li>
<li>About</li>
</ul>
</div>
<div class='boring-text'>
<h1> boring landing pages</h1>
<h3> phones: {val}</h3>
<h4> React - Three</h4>
<div class='slider-wrapper'>
<input type="range" orient="vertical" min="1" max="50" value='10' class='slider' />
</div>
</div>
</div>
</body>
</html>
About the slider you can check this answer, it may help you.
About the animations I'm waiting for further information as I reproduce it on your snippet I'm seeing it working well and concurrently.
Related
* {
box-sizing: border-box;
}
.btn-option {
width: 330px;
padding: 12px 24px;
margin: auto;
border-radius: 8px;
background-color: transparent;
color: #4c4c4c;
visibility: visible;
border: 1px solid #d2d2d2;
text-transform: capitalize;
font-weight: 500;
letter-spacing: 1px;
font-family: "Lato", sans-serif;
font-size: 16px;
display: flex;
align-items: center;
justify-content: space-between;
/* transition */
transition: filter 0.3s ease 0.3s;
}
.survey-checkbox {
position: relative;
}
.survey-checkbox::before {
content: "";
position: absolute;
width: 24px;
height: 24px;
background: #efefef;
border-radius: 50%;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.option-container {
margin: auto;
display: flex;
flex-direction: column;
row-gap: 20px;
flex-wrap: wrap;
}
#media only screen and (max-width: 768px) {
.btn-option {
width: 280px;
}
}
.btn-option:active {
filter: drop-shadow(0 0 0 steelblue);
transition: filter 0s;
}
.btn-option:active {
background: #fcece8;
border: 1px solid #e76943;
}
.btn-option:active .survey-checkbox::before {
background-color: #e76943;
}
.btn-option:not(:active) {
transition: all 1000ms step-end;
}
.survey-checkbox::before:active {
background-color: #e76943;
}
.btn-option:active {
animation: all 1s forwards linear;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="./index.css" />
<title>Document</title>
</head>
<body>
<div
class="btn btn-option">
<span>Good</span><input type="checkbox" class="survey-checkbox" />
</div>
</body>
</html>
Guys I want to Animate the Checkbox on clicking the parent div right now the problem is as I'm clicking on the parent div it's working fine as expected but the checkbox is working till the active state is there how can I make it transition same like the div.
To make the Div animate on active state I followed an article
I can't seem to find what I am doing wrong here. The transform:translate property is causing a bad effect when the element is hovered.
Please look at this codepen.
https://codepen.io/kuromicho/pen/LYxrQPv
CSS
.row {
max-width: 600px;
margin: 0 auto;
border: 1px solid black;
}
.col {
display: block;
width:50%;
float: left;
border: 1px solid red;
}
.big-icon {
position: relative;
left: 50%;
transform: translateX(-50%);
transition: scale 0.2s;
}
.big-icon {
font-size: 300%;
color: #e67e22;
}
.big-icon:hover {
transform: scale(1.15);
}
HTML:
<head>
<link rel="preconnect" href="https://fonts.gstatic.com" />
<link
<link
rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css"
/>
</head>
<body>
<div class="row">
<div class="col">
<ion-icon name="infinite-sharp" class="big-icon"></ion-icon>
</div>
<div class="col">
<ion-icon name="cart-sharp" class="big-icon"></ion-icon>
</div>
</div>
</body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
<script src="https://unpkg.com/ionicons#5.4.0/dist/ionicons.js"></script>
</html>
I don't know why you defined big-icon class twice in your CSS, but this is my fixes in the bottom of CSS file, take a closer look at those lines of CSS I commented/deleted:
* {
margin: 0;
padding: 0;
box-sizing: inherit;
}
html {
box-sizing: border-box;
font-size: 62.5%;
height: 100vh;
}
body {
font-size: 20px;
font-family: "Lato", "Arial", sans-serif;
font-weight: 400;
}
.row {
max-width: 600px;
margin: 0 auto;
border: 1px solid black;
}
.col {
display: flex;
justify-content: center;
width: 50%;
/* float: left; */
border: 1px solid red;
}
.big-icon {
/* position: relative; */
/* left: 50%; */
font-size: 300%;
color: #e67e22;
/* transform: translateX(-50%); */
transition: transform 0.2s ease;
}
.big-icon:hover {
transform: scale(1.15);
}
I have been struggling an issue I have using CSS overflow.
I have a page that I intend to be responsive. The navigation menu is what is causing my issue.
Specifically the "overflow-x: hidden" declaration...
At first I thought the issue could be related to devtools, (or rather my misuse of it) but I have tested the site on two mobile phones and it's the same there...
The interesting thing is how the overflow is not hidden until there is a click event, I think the solution is related to this fact... maybe haha
https://www.youtube.com/watch?v=_hsCahD-1Ig
I'd really appreciate anyone taking a look at the video and giving me some advice. Thanks.
UPDATE: As pointed out... I should really add the code too...
HTML (index.html):
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link href="https://fonts.googleapis.com/css?family=Poppins" rel="stylesheet">
<link rel="stylesheet" href="style.css">
<title>Responsive Sliding Nav</title>
</head>
<body>
<nav>
<div class="logo">
<h4>NAV BAR</h4>
</div>
<ul class="nav-links">
<li>Home</li>
<li>About</li>
<li>Work</li>
<li>Projects</li>
</ul>
<div class="burger">
<div class="line1"></div>
<div class="line2"></div>
<div class="line3"></div>
</div>
</nav>
<script src="app.js"></script>
</body>
</html>
CSS (style.css):
*{
margin: 0px;
padding: 0px;
box-sizing: border-box;
}
html {
background: url(tst.jpg);
//background-size: auto 100vh;
background-size: cover;
background-repeat: no-repeat
}
nav{
display: flex;
justify-content: space-around;
align-items: center;
min-height: 8vh;
// background-color: #5D4954;
background-color: rgba(93, 73, 84, 0.79);
font-family: 'Poppins', sans-serif;
}
.logo{
color: rgb(226, 226, 226);
text-transform: uppercase;
letter-spacing: 5px;
font-size: 20px;
}
.nav-links{
display: flex;
justify-content: space-around;
width: 50%;
}
.nav-links li{
list-style: none;
}
.nav-links a{
color: rgb(226, 226, 226);
text-decoration: none;
letter-spacing: 3px;
font-weight: bold;
font-size: 14px;
}
.burger{
display: none;
cursor: pointer;
}
.burger div{
width: 25px;
height: 3px;
background-color: rgb(226, 226, 226);
margin: 5px;
//transition: all 0.3s ease;
}
#media screen and (max-width:1024px){
.nav-links{
width: 60%;
}
}
#media screen and (max-width:768px){
body {
overflow-x: hidden;
}
.nav-links{
position: absolute;
right: 0px;
height: 92vh;
top: 8vh;
//background-color: #5D4954;
background-color: rgba(93, 73, 84, 0.7);
display: flex;
flex-direction: column;
align-items: center;
width: 50%;
transform: translateX(100%);
transition: transform 0.5s ease-in;
}
.nav-links li {
opacity: 0;
}
.burger {
display: block;
}
}
.nav-active {
transform: translateX(0%);
}
#keyframes navLinkFade {
from{
opacity: 0;
transform: translateX(50px);
}
to{
opacity: 1;
transform: translateX(0px);
}
}
JS (app.js):
const navSlide = () => {
const burger = document.querySelector('.burger');
const nav = document.querySelector('.nav-links');
const navLinks = document.querySelectorAll('.nav-links li');
burger.addEventListener('click', () => {
//Toggle Nav
nav.classList.toggle('nav-active');
//Animate Links
navLinks.forEach((link, index)=>{
if (link.style.animation) {
link.style.animation = '';
} else {
link.style.animation = `navLinkFade 0.5s ease forwards ${index / 7 + 0.5}s`;
}
});
});
}
navSlide();
Since you did not provide any information on how you have created everything (HTML/CSS/Javascript), the only thing I can help you with just by looking at the video is that you probably never set the html or body width/height. So add the following lines in your CSS file:
html, body {
width: 100%;
height: 100%
}
But next time, please be sure to provide more details and code.
You can try by adding !important property like this:
#media screen and (max-width:768px){
body {
overflow-x: hidden!important;
}
......
}
if this doesn't work you should try adding overflow-x:hidden to html as well. Try with and without !important.
Hope this would fix your issue.
Try to move display properties from .nav-links to .nav-active class and set .nav-links display:none
Something like this
.nav-links {
position: absolute;
right: 0px;
height: 92vh;
top: 8vh;
/* background-color: #5D4954; */
background-color: rgba(93, 73, 84, 0.7);
width: 50%;
transform: translateX(100%);
transition: transform 0.5s ease-in;
display: none;
}
.nav-active {
transform: translateX(0%);
display: flex;
flex-direction: column;
align-items: center;
}
Hope this helps :)
Cheers
This question already has answers here:
HTA and 'x-ua-compatible' meta tag
(5 answers)
CSS3 support for HTA
(3 answers)
Closed 3 years ago.
I have a problem with running any script from HTA file because of meta tag.
If I run application without meta tag, then CSS does not work correctly but I can run a script. When I include meta tag, I cannot run any script (undefined), but CSS is fine then
I have already tried with different meta tags.
When I remove <meta http-equiv="x-ua-compatible" content="IE=edge">, then CSS does not work, but closing script does. When I add this piece of code, then it shows error: "'ExitForm' is undefined"
<html>
<head>
<title>Checklist</title>
<meta http-equiv="x-ua-compatible" content="IE=edge">
<HTA:APPLICATION ID="objHTAHelpomatic" APPLICATIONNAME="Checklist" SCROLL="no" SINGLEINSTANCE="yes" WINDOWSTATE="maximize" />
<style type="text/css">
.inputGroup {
background-color: #fff;
display: block;
margin: 10px 0;
position: relative;
}
.inputGroup label {
padding: 12px 30px;
width: 100%;
display: block;
text-align: left;
color: #3c454c;
cursor: pointer;
position: relative;
z-index: 2;
transition: color 200ms ease-in;
overflow: hidden;
}
.inputGroup label:before {
width: 10px;
height: 10px;
border-radius: 50%;
content: '';
background-color: #5562eb;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%) scale3d(1, 1, 1);
transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
opacity: 0;
z-index: -1;
}
.inputGroup label:after {
width: 32px;
height: 32px;
content: '';
border: 2px solid #d1d7dc;
background-color: #fff;
background-image: url("data:image/svg+xml,%3Csvg width='32' height='32' viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.414 11L4 12.414l5.414 5.414L20.828 6.414 19.414 5l-10 10z' fill='%23fff' fill-rule='nonzero'/%3E%3C/svg%3E ");
background-repeat: no-repeat;
background-position: 2px 3px;
border-radius: 50%;
z-index: 2;
position: absolute;
right: 30px;
top: 50%;
transform: translateY(-50%);
cursor: pointer;
transition: all 200ms ease-in;
}
.inputGroup input:checked ~ label {
color: #fff;
}
.inputGroup input:checked ~ label:before {
transform: translate(-50%, -50%) scale3d(56, 56, 1);
opacity: 1;
}
.inputGroup input:checked ~ label:after {
background-color: #54e0c7;
border-color: #54e0c7;
}
.inputGroup input {
width: 32px;
height: 32px;
order: 1;
z-index: 2;
position: absolute;
right: 30px;
top: 50%;
transform: translateY(-50%);
cursor: pointer;
visibility: hidden;
}
.form {
padding: 0 16px;
max-width: 550px;
margin: 50px auto;
font-size: 18px;
font-weight: 600;
line-height: 36px;
}
body {
background-color: #d1d7dc;
font-family: 'Fira Sans', sans-serif;
}
*, *::before, *::after {
box-sizing: inherit;
}
html {
box-sizing: border-box;
}
code {
background-color: #9aa3ac;
padding: 0 8px;
}
</style>
</head>
<script Language="VBScript">
Sub ExitForm()
Close
End Sub
</script>
<body>
<form class="form">
<div class="inputGroup">
<input id="option1" name="option1" type="checkbox" checked />
<label for="option1">dupa</label>
</div>
</form>
<input class="button" type="button" value="CLOSE" name="close" onClick="ExitForm"><br>
</body>
</html>
the navigation works fine until a specific width (about 1100px). If the width gets smaller the links are not clickable anymore. And I don't know why. The only thing I found out, is that, when I add some text (for example in line 51 "mediaquery..."), than the navigation works, but the backgroundcolor of it become white instead of original dark grey.
Do you know what I am doing wrong?
Here is the code:
<html lang="de">
<head>
<meta charset="utf -8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<link rel="stylesheet" href="main.css">
<!--The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<!--[if lt IE 8]>
<script type="text/javascript" src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<!--[if lt IE 9]>
<script src="http://css3-mediaqueries-js.googlecode.com/files/css3-mediaqueries.js"></script>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<title>Arbeitsgruppe Wolken und globales Klima - Universität Leipzig (Fakultät für Physik und Geowissenschaften)</title>
<style>
*{
font-family: helvetica,arial,sans-serif;
}
#media (max-width: 1300px) and (min-width: 0px) {
#luecke_nav1 {
display: none;
}
}
#media (max-width: 1029px) {
.heading #seitentitel h1 {
font-size: 140%;
}
}
#media (min-width: 1029px) {
.menu {
font-size: 1.2em;
}
}
mediaqueryzerhautklassedanach
.menu {
padding: 0.5em;
background: #414141;
min-height: 3em;
line-height: 1em;
position: fixed;
top: 0;
left: 0;
z-index: -6;
}
.menu > ul {
transition: max-height 0.25s linear;
}
.menu ul {
margin: 0;
padding: 0;
text-align: center;
}
.menu li {
transition: visibility .25s linear;
display: inline-block;
padding: .45em 1.1em;
margin: 0 .3em;
position: relative;
}
#media (min-width: 841px) {
.menu li ul {
display: none;
position: absolute;
top: 100%;
margin-top: 1px;
left: -1px;
right: -1px;
}
.menu li:hover ul {
display: block;
}
.menu li li {
margin: -1px 0 0 0;
box-sizing: border-box;
width: 100%;
}
#logo {
display: none;
}
}
#media (max-width: 841px) {
#nav_kasten {
display: none;
}
.hvr-bounce-in{
display: inline-block;
vertical-align: middle;
-webkit-transform: translateZ(0);
transform: translateZ(0);
box-shadow: 0 0 1px rgba(0, 0, 0, 0);
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-moz-osx-font-smoothing: grayscale;
-webkit-transition-duration: 0.5s;
transition-duration: 0.5s;
}
.hvr-bounce-in:hover, .hvr-bounce-in:focus, .hvr-bounce-in:active {
-webkit-transform: scale(1.2);
transform: scale(1.2);
-webkit-transition-timing-function: cubic-bezier(0.47, 2.02, 0.31, -0.36);
transition-timing-function: cubic-bezier(0.47, 2.02, 0.31, -0.36);
}
#luecke_nav{
display: none;
}
.menu > ul {
max-height: 0;
overflow: hidden;
margin: 0 3.5em 0 1em;
}
.menu li {
visibility: hidden;
display: block;
padding: 0.5em 0.6em;
border: none;
}
.menu li ul {
margin-top: 0.5em;
border-left: 1px solid #000;
}
.menu .navbar-handle {
display: block;
}
#navbar-checkbox:checked + .menu ul {
max-height: 300px;
}
#navbar-checkbox:checked + .menu li {
visibility: visible;
}
#navbar-checkbox:checked + .menu .navbar-handle,
#navbar-checkbox:checked + .menu .navbar-handle:after,
#navbar-checkbox:checked + .menu .navbar-handle:before {
border-color: #2098d1;
}
}
.navbar-checkbox {
display: none;
}
.navbar-handle {
display: none;
cursor: pointer;
position: relative;
font-size: 45px;
padding: .5em 0;
height: 0;
width: 1.66666667em;
border-top: 0.13333333em solid;
color: #2098d1;
}
.navbar-handle:before,
.navbar-handle:after {
position: absolute;
left: 0;
right: 0;
content: ' ';
border-top: 0.13333333em solid;
}
.navbar-handle:before {
top: 0.37777778em;
}
.navbar-handle:after {
top: 0.88888889em;
}
.menu {
top: 0;
left: 0;
right: 0;
}
.menu .navbar-handle {
position: fixed;
font-size: 1.2em;
top: 0.7em;
right: 12px;
z-index: 10;
}
/* Overline From Center */
.hvr-overline-from-center {
display: inline-block;
vertical-align: middle;
-webkit-transform: translateZ(0);
transform: translateZ(0);
box-shadow: 0 0 2px rgba(0, 0, 0, 0);
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-moz-osx-font-smoothing: grayscale;
position: relative;
overflow: hidden;
}
.hvr-overline-from-center:before {
content: "";
position: absolute;
z-index: -1;
left: 50%;
right: 50%;
background: #2098d1;
height: 7px;
top: -20%;
-webkit-transition-property: left, right;
transition-property: left, right;
-webkit-transition-duration: 0.3s;
transition-duration: 0.3s;
-webkit-transition-timing-function: ease-out;
transition-timing-function: ease-out;
}
.hvr-overline-from-center:hover:before, .hvr-overline-from-center:focus:before, .hvr-overline-from-center:active:before {
left: 0;
right: 0;
}
a:link, a:visited, a:active {
text-decoration: none;
color: #2098d1;
}
a:hover {
text-decoration: none;
color: #2098d1;
}
#lim_logo {
width: 50%;
margin-top: 8%;
text-align: center;
z-index: 99;
}
#nav_kasten {
width: 14.7%;
height: 40%;
z-index: 99;
position: absolute;
top: 0;
margin-left: 42%;
}
#base {
position: relative;
display: inline-block;
width: 100%;
text-align: center;
color: white;
background: gray;
text-decoration: none;
padding-bottom:15%;
background-clip:content-box;
overflow:hidden;
}
#base:after {
content: "";
position: absolute;
top:83%;
left: 0;
background-color:inherit;
padding-bottom:50%; width:57.7%;
z-index: -1;
-webkit-transform-origin:0 0;
-ms-transform-origin:0 0;
transform-origin:0 0;
-webkit-transform: rotate(-30deg) skewX(30deg);
-ms-transform: rotate(-30deg) skewX(30deg);
transform: rotate(-30deg) skewX(30deg);
}
.hvr-bounce-in {
}
.hvr-bounce-in:hover, .hvr-bounce-in:focus, .hvr-bounce-in:active {
}
#logo{
width: 15%;
top: 2%;
left: 1%;
z-index: 4;
position: fixed;
}
.heading {
background: url(https://pixabay.com/static/uploads/photo/2012/10/26/01/38/cold-front-63037_960_720.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
background-attachment: fixed;
z-index:-7;
padding: 18%;
}
#seitentitel {
background-color:rgba(255,255,255,0.7);
text-align: center;
padding: 2%;
margin: 0.5%;
}
.linie {
border :none;
border-top: 1px solid #0090E0;
background-color:#FFFFFF;
height: 1px;
margin: 0px 80px 0px 80px;
}
</style>
</head>
<body>
<header>
<div id="nav_kasten">
<img id="lim_logo" src="http://www.uni-leipzig.de/~strahlen/web/images/LOGOLIM_trans_white.gif">
</div>
<div id="logo">
<img id="lim_logo" src="http://www.uni-leipzig.de/~strahlen/web/images/LOGOLIM_trans_white.gif">
</div>
<input type="checkbox" id="navbar-checkbox" class="navbar-checkbox">
<nav class="menu">
<ul>
<li>Home</li>
<li>Team</li>
<li>Veröffentlichungen</li>
<li id="luecke_nav"><div id="luecke_nav1"> </div>
<div id="luecke_nav2"> </div></li>
<li>Projekte</li>
<li>Abschlussarbeiten</li>
<li>Links</li>
</ul>
<label for="navbar-checkbox" class="navbar-handle hvr-bounce-in">
</nav>
</header>
<div class="col-md-12 heading">
<div id="seitentitel">
<hr class="linie">
<h1> Arbeitsgruppe <br> Wolken und globales Klima</h1>
<hr class="linie">
</div>
</div>
<div class="col-md-12 text2">
<h2 style="text-align: center;"></h2>
<br>
<div class="col-md-6">
</div>
<div class="col-md-12">
</div>
</div>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<script>
</script>
</body>
So all adding that text does is essentially stop the browser from rendering the rest of the css that follows. What you need to do is;
1) Remove that text you've added in the css.
2) Remove the z-index on both the .menu and .heading. This is the problem. You've applied a lower z-index to the .heading but because it exists in the html at a higher stacking order than the .menu, it isn't working as you've intended it. So .heading is hiding your .menu
That should fix your problem.
Also i noticed:
a) You used a duplicate id on your logo image. #lim_logo use a class instead and then undate your css accordingly.
b) Just before your closing </nav> you are missing a closing </label> tag.
c) Update your media query expressions. Max-width should (in most cases) stop below the breakpoint. for example you might have a breakpoint at 1300px, so the max-width for targeting below that breakpoint would be 1299px. and then the min-width for targeting from that breakpoint and up would be 1300px. And there's no point including the min-width:0px as that would be implied.