2017-04-03 54 views
1

我在網站上有一個CSS下拉菜單,我想用CSS媒體查詢做出響應,但它在特定的斷點處沒有響應。我使用寬度和最大寬度屬性來使它響應,但它失敗。請協助?製作一個CSS下拉菜單響應

HTML

.navbar{ 
 
    width:100%; 
 
    max-width:1000px; 
 
    text-align:center; 
 
    margin-top:-8px; 
 
    margin-bottom:23px; 
 
    margin-left:160px; 
 
} 
 
.menu ul{ 
 
/*Removes bullets*/ 
 
    list-style:none; 
 
} 
 
.menu ul .active{ 
 
    background: red; /* For browsers that do not support gradients */ 
 
    background: -webkit-linear-gradient(red 20%, green); /* For Safari 5.1 to 6.0 */ 
 
    background: -o-linear-gradient(red 20%, green); /* For Opera 11.1 to 12.0 */ 
 
    background: -moz-linear-gradient(red 20%, green); /* For Firefox 3.6 to 15 */ 
 
    background: linear-gradient(red 20%, green); /* Standard syntax */ 
 
    background: linear-gradient(red 20%, green); /* Standard syntax */ 
 
} 
 
/*Styles each list within ul*/ 
 
.menu ul li{ 
 
    background-color:green; 
 
    border:1px solid #ffffff; 
 
    width:100%; 
 
    max-width:173px; 
 
    height:35px; 
 
    line-height:35px; 
 
    margin:auto; 
 
    text-align:center; 
 
    /*Makes the list dispaly in a horizontal maneer*/ 
 
    float:left; 
 
    position:relative; 
 
    border-radius:8px; 
 
    font: 15px; 
 
    font-weight:regular; 
 
} 
 
.menu ul li a{ 
 
    text-decoration:none; 
 
    color:white; 
 
    display:block; 
 
} 
 
.menu ul li a:hover{ 
 
    background-color:red; 
 
    border-radius:8px; 
 
} 
 
.menu ul ul{ 
 
    position:absolute; 
 
    margin-left:-40px; 
 
    display:none; 
 
} 
 
.menu ul li:hover >ul{ 
 
    display:block; 
 
} 
 
.menu ul ul ul{ 
 
    width:100%; 
 
    margin-left:134px; 
 
    top:0px; 
 
} 
 
@media only screen and (min-width: 1023px) and (max-width: 1223px) { 
 
    .navbar{ \t 
 
    width:98%; \t 
 
    max-width:1000px; 
 
    } 
 
    .menu ul li{ \t 
 
    width:98%; \t 
 
    max-width:173px; \t 
 
    height:35px; \t 
 
    line-height:35px; \t 
 
    margin:auto; 
 
    } 
 
    .menu ul ul ul{ \t 
 
    width:98%; \t 
 
    margin-left:134px; \t 
 
    top:0px; 
 
    } 
 
}
<div class="navbar"> 
 
    <div class="menu"> 
 
    <ul> 
 
     <li class="active"> Home </li> 
 
     <li> <a href="art.html"> Arts & Social Sciences <span class="arrow">&#9660; </span> </a> 
 
     <ul> 
 
      <li> <a href="#"> Sociology</a></li> 
 
      <li> <a href="#"> Anthropology </a></li> 
 
      <li> <a href="#"> Linguistics </a></li> 
 
      <li> <a href="#"> Political Science <span class="arrow"> &rang;</span></a> 
 
      <ul> 
 
      <li><a href="#"> World Civilization </a></li> 
 
      <li><a href="#"> Politics of Development </a></li> 
 
      <li><a href="#"> Comparative Politics</a></li> 
 
      <li><a href="#"> Globalization </a></li> 
 
      </ul> 
 
      </li> 
 
     </ul> 
 
     </li> 
 
     <li> <a href="business.html"> Business & Economics <span class="arrow">&#9660; </span> </a> 
 
     <ul> 
 
      <li> <a href="#"> Business Management</a></li> 
 
      <li> <a href="#"> Purchasing and Supplies </a></li> 
 
      <li> <a href="#"> Economics </a> 
 
      <ul> 
 
       <li><a href="#"> Micro Economics </a></li> 
 
       <li><a href="#"> Inflation </a></li> 
 
       <li><a href="#"> Stock Excahange </a></li> 
 
       <li><a href="#"> Supply Chain </a></li> 
 
       <li><a href="#"> Macro-Economics </a></li> 
 
      </ul> 
 
      </li> 
 
     </ul> 
 
     </li> 
 
     <li> <a href="edu.html"> Education<span class="arrow">&#9660; </span> </a> 
 
     <ul> 
 
      <li> <a href="#"> Education(Arts)</a></li> 
 
      <li> <a href="#"> Early Childhood </a></li> 
 
      <li> <a href="#"> Education(Scienmce)</a></li> 
 
      <li> <a href="#"> Education & Technology</a> 
 
      <ul> 
 
       <li><a href=""> Marketing </a></li> 
 
       <li><a href=""> Supply Chain </a></li> 
 
      </ul> 
 
      </li> 
 
     </ul> 
 
     </li> 
 
     <li><a href="contact.php"> Contact Us</a></li> 
 
    </ul> 
 
    </div> 
 
</div>

+0

做你添加你的meta標籤?

+0

其中是小屏幕的媒體查詢? –

+0

添加媒體查詢移動視圖 –

回答

0
<!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"> 
<title>Example </title> 
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> 
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous"> 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> 
<style type="text/css"> 
    .bs-example{ 
     margin: 20px; 
    } 
</style> 
</head> 
<body> 
<div class="bs-example"> 
    <nav id="myNavbar" class="navbar navbar-default" role="navigation"> 
     <!-- Brand and toggle get grouped for better mobile display --> 
     <div class="container"> 
      <div class="navbar-header"> 
       <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"> 
        <span class="sr-only">Toggle navigation</span> 
        <span class="icon-bar"></span> 
        <span class="icon-bar"></span> 
        <span class="icon-bar"></span> 
       </button> 
       <a class="navbar-brand" href="#">Brand</a> 
      </div> 
      <!-- Collect the nav links, forms, and other content for toggling --> 
      <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> 
       <ul class="nav navbar-nav"> 
        <li><a href="#">Menu</a></li> 
        <li><a href="#">Menu</a></li> 
        <li class="dropdown"> 
         <a href="#" data-toggle="dropdown" class="dropdown-toggle">Menu <b class="caret"></b></a> 
         <ul class="dropdown-menu"> 
          <li><a href="#">Sub-Menu</a></li> 
          <li><a href="#">Sub-Menu</a></li> 
          <li><a href="#">Sub-Menu</a></li> 
          <li><a href="#">Sub-Menu</a></li> 
         </ul> 
        </li> 
       </ul> 
      </div><!-- /.navbar-collapse --> 
     </div> 
    </nav> 
</div> 
</body> 
</html> 
+0

試試這個代碼它會幫助你 –

0

(function($) { 
 
    $.fn.menumaker = function(options) { 
 
    var cssmenu = $(this), 
 
     settings = $.extend({ 
 
     format: "dropdown", 
 
     sticky: false 
 
     }, options); 
 
    return this.each(function() { 
 
     $(this).find(".button").on('click', function() { 
 
     $(this).toggleClass('menu-opened'); 
 
     var mainmenu = $(this).next('ul'); 
 
     if (mainmenu.hasClass('open')) { 
 
      mainmenu.slideToggle().removeClass('open'); 
 
     } else { 
 
      mainmenu.slideToggle().addClass('open'); 
 
      if (settings.format === "dropdown") { 
 
      mainmenu.find('ul').show(); 
 
      } 
 
     } 
 
     }); 
 
     cssmenu.find('li ul').parent().addClass('has-sub'); 
 
     multiTg = function() { 
 
     cssmenu.find(".has-sub").prepend('<span class="submenu-button"></span>'); 
 
     cssmenu.find('.submenu-button').on('click', function() { 
 
      $(this).toggleClass('submenu-opened'); 
 
      if ($(this).siblings('ul').hasClass('open')) { 
 
      $(this).siblings('ul').removeClass('open').slideToggle(); 
 
      } else { 
 
      $(this).siblings('ul').addClass('open').slideToggle(); 
 
      } 
 
     }); 
 
     }; 
 
     if (settings.format === 'multitoggle') multiTg(); 
 
     else cssmenu.addClass('dropdown'); 
 
     if (settings.sticky === true) cssmenu.css('position', 'fixed'); 
 
     resizeFix = function() { 
 
     var mediasize = 700; 
 
     if ($(window).width() > mediasize) { 
 
      cssmenu.find('ul').show(); 
 
     } 
 
     if ($(window).width() <= mediasize) { 
 
      cssmenu.find('ul').hide().removeClass('open'); 
 
     } 
 
     }; 
 
     resizeFix(); 
 
     return $(window).on('resize', resizeFix); 
 
    }); 
 
    }; 
 
})(jQuery); 
 

 
(function($) { 
 
    $(document).ready(function() { 
 
    $("#cssmenu").menumaker({ 
 
     format: "multitoggle" 
 
    }); 
 
    }); 
 
})(jQuery);
* { 
 
    margin: 0; 
 
    padding: 0; 
 
    text-decoration: none 
 
} 
 

 
body { 
 
    background: #555; 
 
} 
 

 
header { 
 
    position: relative; 
 
    width: 100%; 
 
    background: #333; 
 
} 
 

 
.logo { 
 
    position: relative; 
 
    z-index: 123; 
 
    padding: 10px; 
 
    font: 18px verdana; 
 
    color: #6DDB07; 
 
    float: left; 
 
    width: 15% 
 
} 
 

 
.logo a { 
 
    color: #6DDB07; 
 
} 
 

 
nav { 
 
    position: relative; 
 
    width: 980px; 
 
    margin: 0 auto; 
 
} 
 

 
#cssmenu, 
 
#cssmenu ul, 
 
#cssmenu ul li, 
 
#cssmenu ul li a, 
 
#cssmenu #head-mobile { 
 
    border: 0; 
 
    list-style: none; 
 
    line-height: 1; 
 
    display: block; 
 
    position: relative; 
 
    -webkit-box-sizing: border-box; 
 
    -moz-box-sizing: border-box; 
 
    box-sizing: border-box 
 
} 
 

 
#cssmenu:after, 
 
#cssmenu>ul:after { 
 
    content: "."; 
 
    display: block; 
 
    clear: both; 
 
    visibility: hidden; 
 
    line-height: 0; 
 
    height: 0 
 
} 
 

 
#cssmenu #head-mobile { 
 
    display: none 
 
} 
 

 
#cssmenu { 
 
    font-family: sans-serif; 
 
    background: #333 
 
} 
 

 
#cssmenu>ul>li { 
 
    float: left 
 
} 
 

 
#cssmenu>ul>li>a { 
 
    padding: 17px; 
 
    font-size: 12px; 
 
    letter-spacing: 1px; 
 
    text-decoration: none; 
 
    color: #ddd; 
 
    font-weight: 700; 
 
} 
 

 
#cssmenu>ul>li:hover>a, 
 
#cssmenu ul li.active a { 
 
    color: #fff 
 
} 
 

 
#cssmenu>ul>li:hover, 
 
#cssmenu ul li.active:hover, 
 
#cssmenu ul li.active, 
 
#cssmenu ul li.has-sub.active:hover { 
 
    background: #448D00!important; 
 
    -webkit-transition: background .3s ease; 
 
    -ms-transition: background .3s ease; 
 
    transition: background .3s ease; 
 
} 
 

 
#cssmenu>ul>li.has-sub>a { 
 
    padding-right: 30px 
 
} 
 

 
#cssmenu>ul>li.has-sub>a:after { 
 
    position: absolute; 
 
    top: 22px; 
 
    right: 11px; 
 
    width: 8px; 
 
    height: 2px; 
 
    display: block; 
 
    background: #ddd; 
 
    content: '' 
 
} 
 

 
#cssmenu>ul>li.has-sub>a:before { 
 
    position: absolute; 
 
    top: 19px; 
 
    right: 14px; 
 
    display: block; 
 
    width: 2px; 
 
    height: 8px; 
 
    background: #ddd; 
 
    content: ''; 
 
    -webkit-transition: all .25s ease; 
 
    -ms-transition: all .25s ease; 
 
    transition: all .25s ease 
 
} 
 

 
#cssmenu>ul>li.has-sub:hover>a:before { 
 
    top: 23px; 
 
    height: 0 
 
} 
 

 
#cssmenu ul ul { 
 
    position: absolute; 
 
    left: -9999px 
 
} 
 

 
#cssmenu ul ul li { 
 
    height: 0; 
 
    -webkit-transition: all .25s ease; 
 
    -ms-transition: all .25s ease; 
 
    background: #333; 
 
    transition: all .25s ease 
 
} 
 

 
#cssmenu ul ul li:hover {} 
 

 
#cssmenu li:hover>ul { 
 
    left: auto 
 
} 
 

 
#cssmenu li:hover>ul>li { 
 
    height: 35px 
 
} 
 

 
#cssmenu ul ul ul { 
 
    margin-left: 100%; 
 
    top: 0 
 
} 
 

 
#cssmenu ul ul li a { 
 
    border-bottom: 1px solid rgba(150, 150, 150, 0.15); 
 
    padding: 11px 15px; 
 
    width: 170px; 
 
    font-size: 12px; 
 
    text-decoration: none; 
 
    color: #ddd; 
 
    font-weight: 400; 
 
} 
 

 
#cssmenu ul ul li:last-child>a, 
 
#cssmenu ul ul li.last-item>a { 
 
    border-bottom: 0 
 
} 
 

 
#cssmenu ul ul li:hover>a, 
 
#cssmenu ul ul li a:hover { 
 
    color: #fff 
 
} 
 

 
#cssmenu ul ul li.has-sub>a:after { 
 
    position: absolute; 
 
    top: 16px; 
 
    right: 11px; 
 
    width: 8px; 
 
    height: 2px; 
 
    display: block; 
 
    background: #ddd; 
 
    content: '' 
 
} 
 

 
#cssmenu ul ul li.has-sub>a:before { 
 
    position: absolute; 
 
    top: 13px; 
 
    right: 14px; 
 
    display: block; 
 
    width: 2px; 
 
    height: 8px; 
 
    background: #ddd; 
 
    content: ''; 
 
    -webkit-transition: all .25s ease; 
 
    -ms-transition: all .25s ease; 
 
    transition: all .25s ease 
 
} 
 

 
#cssmenu ul ul>li.has-sub:hover>a:before { 
 
    top: 17px; 
 
    height: 0 
 
} 
 

 
#cssmenu ul ul li.has-sub:hover, 
 
#cssmenu ul li.has-sub ul li.has-sub ul li:hover { 
 
    background: #363636; 
 
} 
 

 
#cssmenu ul ul ul li.active a { 
 
    border-left: 1px solid #333 
 
} 
 

 
#cssmenu>ul>li.has-sub>ul>li.active>a, 
 
#cssmenu>ul ul>li.has-sub>ul>li.active>a { 
 
    border-top: 1px solid #333 
 
} 
 

 
@media screen and (max-width:700px) { 
 
    .logo { 
 
    position: absolute; 
 
    top: 0; 
 
    left: 0; 
 
    width: 100%; 
 
    height: 46px; 
 
    text-align: center; 
 
    padding: 10px 0 0 0; 
 
    float: none 
 
    } 
 
    .logo2 { 
 
    display: none 
 
    } 
 
    nav { 
 
    width: 100%; 
 
    } 
 
    #cssmenu { 
 
    width: 100% 
 
    } 
 
    #cssmenu ul { 
 
    width: 100%; 
 
    display: none 
 
    } 
 
    #cssmenu ul li { 
 
    width: 100%; 
 
    border-top: 1px solid #444 
 
    } 
 
    #cssmenu ul li:hover { 
 
    background: #363636; 
 
    } 
 
    #cssmenu ul ul li, 
 
    #cssmenu li:hover>ul>li { 
 
    height: auto 
 
    } 
 
    #cssmenu ul li a, 
 
    #cssmenu ul ul li a { 
 
    width: 100%; 
 
    border-bottom: 0 
 
    } 
 
    #cssmenu>ul>li { 
 
    float: none 
 
    } 
 
    #cssmenu ul ul li a { 
 
    padding-left: 25px 
 
    } 
 
    #cssmenu ul ul li { 
 
    background: #333!important; 
 
    } 
 
    #cssmenu ul ul li:hover { 
 
    background: #363636!important 
 
    } 
 
    #cssmenu ul ul ul li a { 
 
    padding-left: 35px 
 
    } 
 
    #cssmenu ul ul li a { 
 
    color: #ddd; 
 
    background: none 
 
    } 
 
    #cssmenu ul ul li:hover>a, 
 
    #cssmenu ul ul li.active>a { 
 
    color: #fff 
 
    } 
 
    #cssmenu ul ul, 
 
    #cssmenu ul ul ul { 
 
    position: relative; 
 
    left: 0; 
 
    width: 100%; 
 
    margin: 0; 
 
    text-align: left 
 
    } 
 
    #cssmenu>ul>li.has-sub>a:after, 
 
    #cssmenu>ul>li.has-sub>a:before, 
 
    #cssmenu ul ul>li.has-sub>a:after, 
 
    #cssmenu ul ul>li.has-sub>a:before { 
 
    display: none 
 
    } 
 
    #cssmenu #head-mobile { 
 
    display: block; 
 
    padding: 23px; 
 
    color: #ddd; 
 
    font-size: 12px; 
 
    font-weight: 700 
 
    } 
 
    .button { 
 
    width: 55px; 
 
    height: 46px; 
 
    position: absolute; 
 
    right: 0; 
 
    top: 0; 
 
    cursor: pointer; 
 
    z-index: 12399994; 
 
    } 
 
    .button:after { 
 
    position: absolute; 
 
    top: 22px; 
 
    right: 20px; 
 
    display: block; 
 
    height: 4px; 
 
    width: 20px; 
 
    border-top: 2px solid #dddddd; 
 
    border-bottom: 2px solid #dddddd; 
 
    content: '' 
 
    } 
 
    .button:before { 
 
    -webkit-transition: all .3s ease; 
 
    -ms-transition: all .3s ease; 
 
    transition: all .3s ease; 
 
    position: absolute; 
 
    top: 16px; 
 
    right: 20px; 
 
    display: block; 
 
    height: 2px; 
 
    width: 20px; 
 
    background: #ddd; 
 
    content: '' 
 
    } 
 
    .button.menu-opened:after { 
 
    -webkit-transition: all .3s ease; 
 
    -ms-transition: all .3s ease; 
 
    transition: all .3s ease; 
 
    top: 23px; 
 
    border: 0; 
 
    height: 2px; 
 
    width: 19px; 
 
    background: #fff; 
 
    -webkit-transform: rotate(45deg); 
 
    -moz-transform: rotate(45deg); 
 
    -ms-transform: rotate(45deg); 
 
    -o-transform: rotate(45deg); 
 
    transform: rotate(45deg) 
 
    } 
 
    .button.menu-opened:before { 
 
    top: 23px; 
 
    background: #fff; 
 
    width: 19px; 
 
    -webkit-transform: rotate(-45deg); 
 
    -moz-transform: rotate(-45deg); 
 
    -ms-transform: rotate(-45deg); 
 
    -o-transform: rotate(-45deg); 
 
    transform: rotate(-45deg) 
 
    } 
 
    #cssmenu .submenu-button { 
 
    position: absolute; 
 
    z-index: 99; 
 
    right: 0; 
 
    top: 0; 
 
    display: block; 
 
    border-left: 1px solid #444; 
 
    height: 46px; 
 
    width: 46px; 
 
    cursor: pointer 
 
    } 
 
    #cssmenu .submenu-button.submenu-opened { 
 
    background: #262626 
 
    } 
 
    #cssmenu ul ul .submenu-button { 
 
    height: 34px; 
 
    width: 34px 
 
    } 
 
    #cssmenu .submenu-button:after { 
 
    position: absolute; 
 
    top: 22px; 
 
    right: 19px; 
 
    width: 8px; 
 
    height: 2px; 
 
    display: block; 
 
    background: #ddd; 
 
    content: '' 
 
    } 
 
    #cssmenu ul ul .submenu-button:after { 
 
    top: 15px; 
 
    right: 13px 
 
    } 
 
    #cssmenu .submenu-button.submenu-opened:after { 
 
    background: #fff 
 
    } 
 
    #cssmenu .submenu-button:before { 
 
    position: absolute; 
 
    top: 19px; 
 
    right: 22px; 
 
    display: block; 
 
    width: 2px; 
 
    height: 8px; 
 
    background: #ddd; 
 
    content: '' 
 
    } 
 
    #cssmenu ul ul .submenu-button:before { 
 
    top: 12px; 
 
    right: 16px 
 
    } 
 
    #cssmenu .submenu-button.submenu-opened:before { 
 
    display: none 
 
    } 
 
    #cssmenu ul ul ul li.active a { 
 
    border-left: none 
 
    } 
 
    #cssmenu>ul>li.has-sub>ul>li.active>a, 
 
    #cssmenu>ul ul>li.has-sub>ul>li.active>a { 
 
    border-top: none 
 
    } 
 
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<header> 
 
    <nav id='cssmenu'> 
 
    <div class="logo"><a href="index.html">Responsive </a></div> 
 
    <div id="head-mobile"></div> 
 
    <div class="button"></div> 
 
    <ul> 
 
     <li class='active'><a href='#'>HOME</a></li> 
 
     <li><a href='#'>Arts And Social Science</a> 
 
     <ul> 
 
      <li><a href="">sociology</a></li> 
 
      <li><a href="">Anthropology</a></li> 
 
      <li><a href="">Linguistics</a></li> 
 
      <li><a href="">Linguistics</a></li> 
 
      <li><a href="">Political Science</a> 
 
      <ul> 
 
       <li><a href="">World Civilization </a></li> 
 
       <li><a href="">Politics of Development</a></li> 
 
       <li><a href="">Comparative Politics</a></li> 
 
       <li><a href="">Globalization</a></li> 
 
      </ul> 
 
      </li> 
 
     </ul> 
 
     </li> 
 
     <li><a href='#'>Business & Economics</a> 
 
     <ul> 
 
      <li> <a href="#"> Business Management</a></li> 
 
      <li> <a href="#"> Purchasing and Supplies </a></li> 
 
      <li> <a href="#"> Economics </a> 
 
      <ul> 
 
       <li><a href="#"> Micro Economics </a></li> 
 
       <li><a href="#"> Inflation </a></li> 
 
       <li><a href="#"> Stock Excahange </a></li> 
 
       <li><a href="#"> Supply Chain </a></li> 
 
       <li><a href="#"> Macro-Economics </a></li> 
 
      </ul> 
 
      </li> 
 
     </ul> 
 
     </li> 
 
     <li><a href='#'>Education</a> 
 
     <ul> 
 
      <li> <a href="#"> Education(Arts)</a></li> 
 
      <li> <a href="#"> Early Childhood </a></li> 
 
      <li> <a href="#"> Education(Scienmce)</a></li> 
 
      <li> <a href="#"> Education & Technology</a> 
 
      <ul> 
 
       <li><a href=""> Marketing </a></li> 
 
       <li><a href=""> Supply Chain </a></li> 
 
      </ul> 
 
      </li> 
 
     </ul> 
 
     </li> 
 
     <li><a href='#'>Contact Us</a> 
 

 
     </li> 
 

 
    </ul> 
 
    </nav> 
 
</header> 
 
<section style='padding-top:20px;font:bold 44px arial;color:#68D800;'> 
 
    CSS Menu 
 
</section>

0
@media only screen and (min-width: 1023px) and (max-width: 1223px) 

這將執行1023px和1223px之間的代碼,這真的很小。

只使用其中的一個,在這樣的時刻嘗試:

@media only screen and (min-width: 1023px) 

或本:

@media only screen and (min-width: 1023px) 

或者只是提高分辨率的差距,這樣的:

@media only screen and (min-width: 768px) and (max-width: 1223px)