在这种情况下https://jsfiddle.net/naufragio/fqq93gsh/2/我希望左侧的第一个按钮（部分）与导航栏重叠。
换句话说，我希望该按钮完全可见，这样它应该从导航栏中略微显示出来。在当前情况下，您可以看到按钮的最左侧部分不可见。
我尝试使用Z索引，但我认为由于父子关系而无法正常工作。你能告诉我其他策略吗？
html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
margin: 0;
padding: 0;
border: 0;
font-size: 100%;
font: inherit;
vertical-align: baseline;
}
html {
box-sizing: border-box;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
.container {
margin: 0 auto;
width: 80%;
}
body {
margin: 0;
}
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
position: fixed;
top: 0;
width: 80%;
/*QUA CERA 100% E NON ANDAVA BENE. XKE? XKE QUANDO ES FIXED THEN THE width reference to the document and not his parent. QUINDI FACEVA RIFERIMENTO AL 100% DEL DOCUMENTO, NON DEL PADRE (CONTAINER). QUINDI METENDOLA A 80% GLI DICIAMO DI PRENDERE L'80% DEL TOTALE, DEL DOCUMENTO, CHE E' QUELLO CHE VOLGIAMO PER LA NOSTRA UL*/
}
li {
float: left;
font-weight: bold;
}
li a {
display: block;
color: black;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover:not(.active) {
background-color: #111;
}
.imgheader {
text-align: center;
padding-top: 0.5%;
}
.navheader {
border: 1px solid rgba(0, 0, 0, 0.3);
height: 50px;
}
.buttonheader1 {
margin: 10px;
padding: 8px 10px;
background-color: #6288A5;
border: 1px solid #4D7B9F;
border-radius: 3px;
color: #fff;
margin-right: 80px;
clear: both;
}
.buttonheader2 {
margin: 10px;
padding: 8px 10px;
background-color: #6288A5;
border: 1px solid #4D7B9F;
border-radius: 3px;
color: #fff;
clear: both;
}
.buttonleft {
margin: 10px;
padding: 8px 10px;
background-color: white;
border: 1px solid #4D7B9F;
border-radius: 3px;
color: black;
font-weight: bold;
position: relative;
right: 20%;
}<div class="container">
<div class="nav">
<div class="navheader">
<div class="leftheader">
<ul>
<li style="float:left"><button class="buttonleft" type="button">SECTIONS</button></li>
<li style="float:left"><a href="#home">HOME</a></li>
<li style="float:left"><a href="#news">SEARCH</a></li>
</ul>
</div>
<div class="rightheader">
<ul>
<li style="float:right"><button class="buttonheader1" type="button">LOG IN</button></li>
<li style="float:right"><button class="buttonheader2" type="button">SUBSCRIBE</button></li>
</ul>
</div>
<div class="imgheader">
<img src="logo.png" alt="logo">
</div>
</div>
<div class="navarticles">
</div>
</div>
<div class="content">
</div>
<div class="footer">
</div>
</div>
答案 0 :(得分：0)
您需要从父元素overflow: hidden;）中删除ul。
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
margin: 0;
padding: 0;
border: 0;
font-size: 100%;
font: inherit;
vertical-align: baseline;
}
html {
box-sizing: border-box;
}
*, *:before, *:after {
box-sizing: inherit;
}
.container {
margin:0 auto;
width:80%;
}
body {margin:0;}
ul {
list-style-type: none;
margin: 0;
padding: 0;
//overflow: hidden;
position: fixed;
top: 0;
width: 80%; /*QUA CERA 100% E NON ANDAVA BENE. XKE? XKE QUANDO ES FIXED THEN THE width reference to the document and not his parent. QUINDI FACEVA RIFERIMENTO AL 100% DEL DOCUMENTO, NON DEL PADRE (CONTAINER). QUINDI METENDOLA A 80% GLI DICIAMO DI PRENDERE L'80% DEL TOTALE, DEL DOCUMENTO, CHE E' QUELLO CHE VOLGIAMO PER LA NOSTRA UL*/
}
li {
float: left;
font-weight: bold;
}
li a {
display: block;
color: black;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover:not(.active) {
background-color: #111;
}
.imgheader {
text-align: center;
padding-top: 0.5%;
}
.navheader{
border: 1px solid rgba(0, 0, 0, 0.3);
height: 50px;
}
.buttonheader1 {
margin: 10px;
padding: 8px 10px;
background-color: #6288A5;
border: 1px solid #4D7B9F;
border-radius: 3px;
color: #fff ;
margin-right: 80px;
clear:both;
}
.buttonheader2 {
margin: 10px;
padding: 8px 10px;
background-color: #6288A5;
border: 1px solid #4D7B9F;
border-radius: 3px;
color: #fff ;
clear:both;
}
.buttonleft{
margin: 10px;
padding: 8px 10px;
background-color: white;
border: 1px solid #4D7B9F;
border-radius: 3px;
color: black;
font-weight: bold;
position:relative;
right:20%;
} <body>
<div class="container">
<div class="nav">
<div class = "navheader">
<div class="leftheader">
<ul>
<li style="float:left"><button class="buttonleft" type="button">SECTIONS</button></li>
<li style="float:left"><a href="#home">HOME</a></li>
<li style="float:left"><a href="#news">SEARCH</a></li>
</ul>
</div>
<div class="rightheader">
<ul>
<li style="float:right"><button class="buttonheader1" type="button">LOG IN</button></li>
<li style="float:right"><button class="buttonheader2" type="button">SUBSCRIBE</button></li>
</ul>
</div>
<div class="imgheader">
<img src="logo.png" alt="logo">
</div>
</div>
<div class="navarticles">
</div>
</div>
<div class="content">
</div>
<div class="footer">
</div>
</div>
</body>
答案 1 :(得分：0)
您需要将overflow元素的ul属性设置为可见。
See this fiddle
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: visible; // <-- this changed
position: fixed;
top: 0;
width: 80%;
}
.buttonleft{
margin: 10px;
padding: 8px 10px;
background-color: white;
border: 1px solid #4D7B9F;
border-radius: 3px;
color: black;
font-weight: bold;
position:relative;
right:20%;
overflow: visible;
}