Question

请参阅下面的我的编码。当你将鼠标悬停在“商店”上时，我正在努力让我的SubNav出现。我从其他有效的项目中复制了下面的部分代码，但现在什么也没发生。对于SubNav，我只是寻找下拉菜单并显示其他项目。这将在网站的所有页面上进行。有什么建议？谢谢！

='C:\Users\[Filename.xlsx]Sheet1'!$H$1

/* stlyes for body */

body {
  font-family: 'Trocchi', serif;
  background-color: white;
  margin: 0px;
  width: 900px;
  margin: 0 auto;
  border: 3px solid #FEFA91;
}

h1,
h2,
h3,
p {
  margin: 0;
  padding: 0;
}

a {
  font-weight: bold;
  color: white;
}

a:link,
a:visited {
  color: black;
}

a:hover,
a:focus {
  color: #FEFA91;
}


/* Header */

header {
  background-color: #FEFA91;
  width: 100%;
}

header img {
  display: block;
  margin-right: auto;
  margin-left: auto;
  padding-top: 5px;
}


/* the styles for the navigation menu */

#nav_menu {
  display: block;
  overflow: hidden;
  width: 100%;
  margin: 0;
  padding: 0;
}

#nav_menu ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  position: relative;
}

#nav_menu ul li {
  float: left;
  width: 25%;
}

#nav_menu ul li a {
  display: block;
  width: 100%;
  text-align: center;
  padding: 1em 0;
  text-decoration: none;
  background-color: #FEFA91;
  color: black;
}

#nav_menu a.current {
  color: white;
}

#nav_menu ul ul {
  display: none;
  position: absolute;
  top: 100%;
}

#nav_menu ul ul li {
  float: none;
}

#nav_menu ul li a:hover,
#nav_menu ul li a:focus {
  background-color: black;
  color: white;
}

#nav_menu ul li:hover>ul {
  display: block;
}

#nav_menu>ul:after {
  content: "";
  clear: both;
  display: block;
}


/* Main */

main {
  padding: 20px;
  max-width: 950px;
  height: auto;
}


/* Section */

section {
  width: 660px;
  margin: 0;
  padding: 11px 0 0 0;
}

section img {
  padding: 0 15px 10px 15px;
}

section p {
  text-align: left;
  margin: 10px;
}

section dl {
  font-size: 13px;
  text-indent: 30px;
  padding: 20px 0 0 0;
}

section h1 {
  font-size: 35px;
  font-family: 'Euphoria Script', cursive;
}


/* Aside 1 */

#aside1 {
  width: 150px;
  height: 310px;
  float: left;
  background-color: #FEFA91;
  padding: 10px 0 0 0;
  text-align: center;
}

#aside1 img {
  text-align: center;
}


/* Aside 2 */

#aside2 {
  width: 150px;
  height: 310px;
  float: right;
  background-color: #FEFA91;
  padding: 10px 0 0 0;
  text-align: center;
}

#aside2 img {
  text-align: center;
}

#aside2 h2 {
  font-size: 15px;
}

#aside2 p {
  font-size: 13px;
}

#aside2 hr {
  border: 1px #000000 solid;
}


/* Footer */

footer {
  clear: both;
  padding: 15px;
  background-color: #FEFA91;
  position: relative;
}

footer p {
  font-size: 90%;
  text-align: right;
}

Answer 1

#nav_menu {
  display: block;
  overflow: hidden; //remove
  width: 100%;
  margin: 0;
  padding: 0;
}
#nav_menu ul ul {
  display: none;
  position: absolute;
  top: 100%;
  width: 100%; // added
}

Answer 2

我在该部分添加了flexbox属性，Flexbox在同一行对齐left main和right列。关于flexbox btw。

有很好的指导

section {
  display:flex; // Add flex
  width: 660px;
  margin: 0;
  padding: 11px 0 0 0;
}

SubNav没有出现

2 个答案: