Using the Responsive-nav plugin, this is done in a simple way and without using a framework like BootsTrap.
You have other options as well as the @Bruno tip
@Hugo put the height of the class .menu_tobo_geral as auto;
But you have to be very careful about good practices when it comes to making some part of a site responsive.
Let's get down to business.
@-webkit-viewport { width: device-width; }
@-moz-viewport { width: device-width; }
@-ms-viewport { width: device-width; }
@-o-viewport { width: device-width; }
@viewport { width: device-width; }
.nav-collapse ul {
margin: 0;
padding: 0;
width: 100%;
display: block;
list-style: none;
}
.nav-collapse li {
width: 100%;
display: block;
}
.js .nav-collapse {
clip: rect(0 0 0 0);
max-height: 0;
position: absolute;
display: block;
overflow: hidden;
zoom: 1;
}
.nav-collapse.opened {
max-height: 9999px;
}
.disable-pointer-events {
pointer-events: none !important;
}
.nav-toggle {
-webkit-tap-highlight-color: rgba(0,0,0,0);
-webkit-touch-callout: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
-o-user-select: none;
user-select: none;
}
@media screen and (min-width: 40em) {
.js .nav-collapse {
position: relative;
}
.js .nav-collapse.closed {
max-height: none;
}
.nav-toggle {
display: none;
}
}
header {
background: #616161;
position: fixed;
z-index: 3;
width: 100%;
left: 0;
top: 0;
}
.logo {
-webkit-tap-highlight-color: rgba(0,0,0,0);
text-decoration: none;
font-weight: bold;
line-height: 55px;
padding: 0 20px;
color: #fff;
float: left;
}
.mask {
-webkit-transition: opacity 300ms;
-moz-transition: opacity 300ms;
transition: opacity 300ms;
background: rgba(0,0,0, .5);
visibility: hidden;
position: fixed;
opacity: 0;
z-index: 2;
bottom: 0;
right: 0;
left: 0;
top: 0;
}
.android .mask {
-webkit-transition: none;
transition: none;
}
.js-nav-active .mask {
visibility: visible;
opacity: 1;
}
@media screen and (min-width: 40em) {
.mask {
display: none !important;
opacity: 0 !important;
}
}
fixed {
position: fixed;
width: 100%;
left: 0;
top: 0;
}
.nav-collapse,
.nav-collapse * {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
.nav-collapse,
.nav-collapse ul {
list-style: none;
width: 100%;
float: left;
}
@media screen and (min-width: 40em) {
.nav-collapse {
float: right;
width: auto;
}
}
.nav-collapse li {
float: left;
width: 100%;
}
@media screen and (min-width: 40em) {
.nav-collapse li {
width: auto;
}
}
.nav-collapse a {
-webkit-tap-highlight-color: rgba(0,0,0,0);
border-top: 1px solid white;
text-decoration: none;
background: #616161;
padding: 0.7em 1em;
color: #fff;
width: 100%;
float: left;
}
.nav-collapse a:active,
.nav-collapse .active a {
background: #323232;
}
.nav-collapse a:hover,
.nav-collapse .hover a {
background: #484848;
}
@media screen and (min-width: 40em) {
.nav-collapse a {
border-left: 1px solid white;
padding: 1.02em 2em;
text-align: center;
border-top: 0;
float: left;
margin: 0;
}
}
.nav-collapse ul ul a {
background: #484848;
padding-left: 2em;
}
@media screen and (min-width: 40em) {
.nav-collapse ul ul a {
display: none;
}
}
.nav-toggle {
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-decoration: none;
text-indent: -300px;
position: relative;
overflow: hidden;
width: 60px;
height: 55px;
float: right;
}
.nav-toggle:before {
color: #fff; /* Edit this to change the icon color */
font: normal 28px/55px "responsivenav"; /* Edit font-size (28px) to change the icon size */
text-transform: none;
text-align: center;
position: absolute;
content: "61"; /* Hamburger icon */
text-indent: 0;
speak: none;
width: 100%;
left: 0;
top: 0;
}
.nav-toggle.active:before {
font-size: 24px;
content: ""; /* Close icon */
}
<head>
<meta name="viewport" content="width=device-width,initial-scale=1">
<script src="http://www.barietoner.com.br/js/responsive-nav.js"></script></head><body><header><ahref="#home" class="logo" data-scroll>Menu</a>
<nav class="nav-collapse">
<ul>
<li class="menu-item active"><a href="#home" data-scroll>Inicio</a></li>
<li class="menu-item"><a href="#about" data-scroll>Sobre</a></li>
<li class="menu-item"><a href="#projects" data-scroll>Projetos</a></li>
<li class="menu-item"><a href="#blog" data-scroll>Blog</a></li>
</ul>
</nav>
</header>
<script src="http://www.barietoner.com.br/js/fastclick.js"></script><scriptsrc="http://www.barietoner.com.br/js/scroll.js"></script>
<script src="http://www.barietoner.com.br/js/fixed-responsive-nav.js"></script></body>
BecauseoftheStacksnippetthemenudidnotseemtobefunctional,butitisworkingandcanbeseen here >.
To check how the menu would look at different resolutions, you can
resize the browser window, use CTRL + SHIFT + M (google
chrome) or check your browser's developer tool;)