Need help to understand. I can't totally control the transition property - html

Question

Here is the deal. I'm trying to create a mobile first navigation bar using css3, html5 and transition properties. I've been successful so far but I am unable to control the transition for when I resize the window (using media queries min-width) from desktop view to mobile view. I've add a Toggle button in the mobile view to create a burger menu that disappears at 600px and vice versa. when the button is unchecked (menu not visible) and I resize the view from desktop to mobile there is a very fast transition that I don't want. I've tried so far so many variants and nothing seems to work. Any suggestion would be greatly appreciated!
* {
margin: 0;
padding: 0;
outline: none;
box-sizing: border-box;
}
body {
background: #eee;
color: #444;
-webkit-font-smoothing: antialiased;
font-family: Arial, sans-serif;
font-weight: 400;
height: auto !important;
height: 100%;
min-height: 100%;
text-rendering: optimizeLegibility;
}
header {
display: block;
background-color: #FFF;
height: inherit;
}
nav {
text-align: center;
line-height: 3.5em;
}
nav ul {
background-color: rgba(255, 255, 255, 0.15);
float: none;
line-height: inherit;
margin: 0;
}
nav ul li {
display: block;
list-style-type: none;
}
nav ul li:hover {
background-color: #ededed;
}
nav ul li a {
text-decoration: none;
color: #313131;
}
nav ul li a:hover {
color: #b9b5b5;
}
#menuToggle {
display: none;
}
.menu {
width: 100%;
position: absolute;
top: 66px;
transition: all 300ms ease-in-out;
}
.menu-icon {
float: right;
color: #2f2f2f;
cursor: pointer;
padding-top: 0.46em;
padding-right: 1em;
padding-left: 1em;
padding-bottom: 0.46em;
text-decoration: none;
font-size: 30px;
}
.menu {
max-height: 0;
transition-property: max-height 0s ease-in-out;
overflow: hidden;
}
#menuToggle:checked ~ header .menu {
max-height: 300px;
transition-property: all 0.6s ease-in-out;
}
#logo {
float: none;
text-align: left;
padding-top: 7px;
padding-left: 2em;
height: inherit;
}
/*------------ MEDIUM BIG SCREEN -----------------------*/
#media screen and (min-width:600px) {
#logo {
float: left;
}
.menu {
position: relative;
top: -70px;
height: 100%;
max-height: 100%;
transition-property: none;
}
.menu-icon {
display: none;
}
header {
height: 70px;
background-color: #FFF;
margin: auto;
width: 100%;
}
nav {
width: 100%;
}
nav ul {
background-color: #FFF;
display: block;
float: right;
padding: 0.55em 2em 0 0;
height: inherit;
}
nav ul li {
display: inline-flex;
}
nav ul li:hover {
background-color: #FFF;
}
nav ul li a {
padding: 0 2em;
}
<!-- === MENUTOGGLE === -->
<input type="checkbox" name="checkbox" id="menuToggle" value="value">
<label for="menuToggle" class="menu-icon">☰</label>
<!-- ==== HEADER ==== -->
<header class="header">
<div id="logo">
<h1><img src="images/logo.png" alt="Hello"></h1>
</div>
<nav class="menu">
<ul>
<li>Work</li>
<li>About</li>
<li>Blog </li>
<li>Contact</li>
</ul>
</nav>
</header>

Answer 1

Put everything you only want to happen on the small screen inside:
#media screen and (max-width:599px) {
}
And everything you only want to happen on the large screen inside your:
#media screen and (min-width:600px) {
}