无需背景图片就可以实现导航栏分割线，颜色自定，线段虚实自定。
.nav1{
width:auto;
height:50px;
text-align:center;
margin:13px auto 0;
}
.nav1 a{
display: inline-block;
text-decoration:none;
}
.nav1 a:hover{
color:#09109e;
border:6px none #fff;
font-weight:bold;
}
.nav1 li{
position:relative;
}
/*制作导航分隔线效果*/
.nav1 li::before,
.nav1 li::after{
content:"";
position:absolute;
top:-5px;
height: 40px;
width: 1px;
}
.nav1 li::after{
right: 0;
background: -moz-linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%,
rgba(255,255,255,0));
background: -webkit-linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%,
rgba(255,255,255,0));
background: -o-linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%, rgba
(255,255,255,0));
background: -ms-linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%, rgba
(255,255,255,0));
background: linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%, rgba
(255,255,255,0));
}
.nav1 li::before{
left: 0;
background: -moz-linear-gradient(top, #2580d9, #c4dff5, #2580d9, #c4dff5, #2580d9,#c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9);
background: -webkit-linear-gradient(top, #2580d9, #c4dff5, #2580d9, #c4dff5, #2580d9,#c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9);
background: -o-linear-gradient(top, #2580d9, #c4dff5, #2580d9, #c4dff5, #2580d9,#c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9);
background: -ms-linear-gradient(top, #2580d9, #c4dff5, #2580d9, #c4dff5, #2580d9,#c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9);
background: linear-gradient(top, #2580d9, #c4dff5, #2580d9, #c4dff5, #2580d9,#c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9, #c4dff5,#2580d9);
}
/*删除导航第一个和最后一个分隔线*/
.nav1 li:first-child::before{
display: none;
}
.nav1 li:last-child::after{
display: none;
}
转载于:https://www.cnblogs.com/Zmmy/p/8536542.html
相关资源：Python3.x Pyqt5实现主窗体（QMainWindow类）里的分割器QSplitter动态载入子窗体（QWidget类），还实现了导航栏抽屉效果
