html - CSS 固定标题 - 放大时无法访问选项卡

Question

我使用了 position 值 fixed 以便在用户向下滚动时标题保持在原位。

问题是，如果我放大我无法看到或访问我的某些选项卡，例如:

有没有一种方法可以放大并仍然能够查看和访问我的标签页？

我的代码:

JSFIDDLE CODE

HTML:

<div id="top">
    <header>
        <hgroup>
            <h1>LOGO</h1>
        </hgroup>
        <nav>
            <ul>
                <li class="tabs"><a href="#">First</a></li>
                <li class="tabs"><a href="#">Second</a></li>
                <li class="tabs"><a href="#">Third</a></li>
                <li class="tabs"><a href="#">Fourth</a></li>
            </ul>
       </nav>
    </header>

CSS:

#top {
    background-color: #1b1b1b;
    box-shadow: 0px 0px 9px rgba(0,0,0,0.15);
    padding: 20px 100px;
    width: 100%;
    height: 70px;
    z-index: 99999;
    position: fixed;
    top: 0;
    left: 0;
}
header {
    position: relative;
    width: 440px;
    height: 70px;
    margin: 0 auto;
}
header hgroup {
    position: absolute;
    display: block;
    top: 5px;
    left: -50px;
}
header hgroup h1 {
    font-size: 50px;
    color: #fff;
    display: block;
    height: 100px;
    width: 610px;
}
nav {
    float: right;
}
nav ul li:hover > ul {
    display: block;
}
nav ul {
    margin-top: 10px;
    padding: 0 20px;  
    list-style: none;
    position: relative;
    display: inline-table;
    margin-right: -80px;
}
nav ul:after {
    content: ""; 
    clear: both; 
    display: block;
}
nav ul li {
    float: left;
}
nav ul li:hover {
    color: #fff;
}
.tabs:hover {
    border-bottom: 5px solid #fff;
}
nav ul li a:hover {
    color: #fff;
}
nav ul li a {
    display: block; 
    padding: 15px 15px;     
    font-family: 'PT Sans', sans-serif;
    color: #fff; 
    text-decoration: none;
}

Answer 1

不要为您的 header 使用固定宽度，而是使用 100%:

#top {
    background-color: #1b1b1b;
    box-shadow: 0px 0px 9px rgba(0,0,0,0.15);

    width: 100%;
    height: 70px;
    z-index: 99999;
    position: fixed;
    top: 0;
    left: 0;
}
header {
    position: relative;
    width: 100%;
    height: 70px;
    margin: 0 auto;
}

Updated Fiddle