刚刚推出了这个网站(http://dovidoved.org/),客户想要每个下拉菜单顶部的其中一个三角形/箭头.问题是菜单周围有一个边框,箭头应该与背景和边框都啮合.不知道该怎么做.有什么建议？我必须要使用图像吗？这是我的CSS:
/* creates triangle */
.main-navigation ul ul:before {
border-bottom: 10px solid #fae0bb;
border-left: 10px solid transparent;
border-right: 10px solid transparent;
content: "";
height: 0;
position: absolute;
right: 0;
top: -10px;
width: 0;
}
.main-navigation ul ul {
background: #fae0bb;
border: 8px solid #fffefe;
box-shadow: 0 3px 3px rgba(0, 0, 0, 0.2);
float: left;
position: absolute;
margin: 0;
top: 2.8em;
left: -999em;
width: 200px;
z-index: 99999;
}
刚刚重新启动了我的服务器，现在出现了五个错误，所有错误都与 wp-includes 文件夹中的 canonical.php 相关：
[Sun Sep 22 19:55:37.037647 2019] [php7:notice] PHP Notice: Undefined index: host in /www/webroot/cafed/wordpress/wp-includes/canonical.php on line 507
[Sun Sep 22 19:55:37.037679 2019] [php7:notice] PHP Notice: Undefined index: host in /www/webroot/cafed/wordpress/wp-includes/canonical.php on line 508
[Sun Sep 22 19:55:37.037702 2019] [php7:notice] PHP Notice: Undefined index: host in /www/webroot/cafed/wordpress/wp-includes/canonical.php on line 508
[Sun Sep 22 19:55:37.037708 2019] [php7:notice] PHP Notice: Undefined index: host in /www/webroot/cafed/wordpress/wp-includes/canonical.php on line 509
[Sun Sep 22 19:55:37.037714 2019] [php7:notice] PHP Notice: Undefined index: host …