html - 导航中的背景边框问题

问题描述

我在将背景颜色一次性应用于导航部分的一部分页面方面遇到了一些麻烦。目前，当我将鼠标悬停在黄铜上时，背景颜色将应用于黄铜和本节中的页面。我想要完成的是让背景颜色仅在我将鼠标悬停在这些元素上而不是一次全部出现时出现。

header {
  color: #348899;
  background-color: #343642;
  background-image: url(Images/heading.png);
  background-position: right;
  background-repeat: no-repeat;
}
#wrapper {
  width: 90%;
  margin-right: auto;
  margin-left: auto;
}
h1 {
  margin: 0;
  padding: 10px;
  font-size: 42pt;
  line-height: 36pt;
  font-weight: lighter;
}
h2 {
  margin: 0;
  padding: 0 10px 5px;
  font-size: 18pt;
  line-height: 22pt;
  font-weight: bold;
  font-style: italic;
}
h3 {
  margin: 0;
  padding: 0 10px 5px 0;
  font-size: 18pt;
  line-height: 22pt;
  font-weight: bold;
  font-style: italic;
}
nav {
  color: #343642;
  background-color: #979C9C;
  float: left;
  width: 160px;
  font-weight: bold;
  height: 100%;
}
nav ul li {
  list-style: none;
  padding: 10px;
}
nav ul li:hover {
  background-color: #b1b6b6;
}
nav ul li a {
  display: block;
  text-decoration: none;
  color: #343642;
}
nav ul li ul {
  display: none;
  position: relative;
  left: auto;
  right: 35%;
}
nav ul li:hover ul  {
  display: block;
}
nav ul li ul li a:hover {
  color: #fff;
}
nav ul li a:hover {
  color: #fff;
}
main {
  color: #17354A;
  background-color: #F2EBC7;
  margin-left: 160px;
  padding: 10px;
  z-index: 0;
  display: flex;
}
.column  {
  float: left;
}
.left {
  width: 75%;
}
.right {
  width: 25%;
}
.text {
  font-size: 25px;
  margin: 0 20px 0 0;
}
main .row .left {
  width: 25%;
}
main .row .middle {
  width: 50%;
}
main .row .right {
  width: 25%;
}
.brass {
  float: right;
  margin: 0 0 5px 5px;
}
.logo {
  float: right;
  margin: 0 0 5px 5px;
}
body{
  background-color: #348899;
  font-family: Calibri, Helvetica, Arial, Sans-Serif;
}
footer {
  color: #348899;
  background-color: #343642;
  font-style: italic;
  text-align: center;
}

<!DOCTYPE html>
<html lang="en">
<head>
  <link rel="stylesheet" href="project.css">
  <meta charset="utf-8" />
  <title>Beginning Band Players - Home</title>
</head>
<body>
  <div id="wrapper">
    <header>
      <h1>
        Beginning Band Players
      </h1>
      <h2>
        Home
      </h2>
    </header>
    <nav>
      <ul>
        <li><a href="index.html">Home</a></li>
        <li><a href="#">Brass</a>
          <ul>
            <li><a href="Brass/trumpet.html">Trumpet</a></li>
            <li><a href="Brass/frenchhorn.html">Horn</a></li>
            <li><a href="Brass/trombone.html">Trombone</a></li>
            <li><a href="Brass/euphonium.html">Euphonium</a></li>
            <li><a href="Brass/tuba.html">Tuba</a></li>
          </ul>
        </li>
        <li><a href="#">Woodwind</a>
          <ul>
            <li><a href="Woodwind/clarinet.html">Clarinet</a></li>
            <li><a href="Woodwind/flute.html">Flute</a></li>
            <li><a href="Woodwind/oboe.html">Oboe</a></li>
            <li><a href="Woodwind/saxophone.html">Saxophone</a></li>
          </ul>
        </li>
        <li><a href="#">Percussion</a>
          <ul>
            <li><a href="Percussion/bells.html">Bells</a></li>
            <li><a href="Percussion/snare.html">Snare Drum</a></li>
          </ul>
        </li>
        <li><a href="#">Maintenence</a></li>
        <li><a href="#">Additional Equipment</a></li>
      </ul>
    </nav>
    <main>
      <div class="column left">
        <div class="logo">
         <img src="Images/Logo-E.png" alt="logo" height="200" width="355">
        </div>
        <h3>
         About us:
        </h3>
        <div class="text">
          <p>
            The purpose of Beginning Band Players is to provide students and parents
            with the necessary resources for a successful start in any band program.
            It's our hope that prospective music students find what they're looking
            for and enjoy a lifetime of music.
          </p>
          <div class="brass">
            <img src="Images/brass-1.jpg" alt="brass" height="238" width="425">
          </div>
        </div>
      </div>
      <div class="column right">
        <h3>
          What to Expect:
        </h3>
        <p>
          Students can learn a little about each instrument found in beginning band
          programs and decide which one they like best. They'll be able to see and
          hear what each instrument sounds like.
        </p>
        <h3>
          Additional Resources:
        </h3>
        <p>
          Students may also need additional equipment such as practice books or supplies
          to help maintain their instruments. Links to such supplies can be found on the
          Additional Equipment page.
        </p>
      </div>
    </main>
    <footer>
      Copyright &copy; 2022, Carter Thomas Wolfe <br>
      Web Project Prototype
    </footer>
  </div>
</body>
</html>

标签： htmlcss

html - 导航中的背景边框问题

问题描述

解决方案

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