Robots.txt向菜单添加不需要的边框

Question

由于使用jekyll的站点地图插件将站点地图添加到我的网站，robots.txt在我的菜单列表中显示了不需要的边框。有没有办法删除/隐藏边框？

化身

<nav id="menu">
<ul class="links">
    <li><a href="#">Home</a></li>
    {% for page in site.pages %} {% if page.layout == "home" or page.url contains ".xml" %} {% else %}
    <li><a href="{{ page.url }}">{{ page.title }}</a></li>
    {% endif %} {% endfor %}
    <ul class="actions">
        <li class="content"><a href="#contact" id="contact-btn">Contact</a></li>
    </ul>
</ul>
<ul class="actions vertical">
    <li><a href="#" class="button special fit">Subscribe to Newsletter</a></li>
</ul>

HTML输出

<!-- Menu -->
<nav id="menu">
    <ul class="links">
        <li><a href="#">Home</a></li>

        <li><a href="/about/">about</a></li>

        <li><a href="/archive.html">archive</a></li>

        <li><a href="/robots.txt"></a></li>

        <ul class="actions">
            <li class="content"><a href="#contact" id="contact-btn">Contact</a></li>
        </ul>
    </ul>
    <ul class="actions vertical">
        <li><a href="#" class="button special fit">Subscribe to Newsletter</a></li>
    </ul>
</nav>

CSS

#menu .inner {
-moz-transition: -moz-transform 0.35s ease-out, opacity 0.35s ease, 
visibility 0.35s;
    -webkit-transition: -webkit-transform 0.35s ease-out, opacity 0.35s ease, visibility 0.35s;
    -ms-transition: -ms-transform 0.35s ease-out, opacity 0.35s ease, visibility 0.35s;
    transition: transform 0.35s ease-out, opacity 0.35s ease, visibility 0.35s;
    -moz-transform: rotateX(20deg);
    -webkit-transform: rotateX(20deg);
    -ms-transform: rotateX(20deg);
    transform: rotateX(20deg);
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
    max-height: 100vh;
    opacity: 0;
    overflow: auto;
    text-align: center;
    visibility: hidden;
    width: 18em;
}

a#contact-btn {
    width: 18em;
    max-width: 100%;
    text-align: center;
    overflow: hidden;
}

#menu .inner>:first-child {
    margin-top: 2em;
}

#menu .inner>:last-child {
    margin-bottom: 3em;
}

#menu ul {
    margin: 0 0 1em 0;
}

#menu ul.links {
    list-style: none;
    padding: 0;
}

#menu ul.links>li {
    padding: 0;
}

#menu ul.links>li>a:not(.button),
#contact-btn {
    border: 0;
    border-top: solid 1px rgba(212, 212, 255, 0.1);
    display: block;
    font-size: 1em;
    font-weight: 300;
    letter-spacing: 0.25em;
    line-height: 4em;
    text-decoration: none;
    text-transform: uppercase;
}

#menu ul.links>li>.button {
    display: block;
    margin: 0.5em 0 0 0;
}

#menu ul.links>li:first-child>a:not(.button) {
    border-top: 0 !important;
}