html - 更改 CSS 菜单上的字体大小

Question

这是我的第一个 CSS 编码，我有从网站上获取的 CSS 代码以使其适应我想做的事情，但是当我尝试更改下拉菜单的字体大小时它没有'不改变。

这是 CSS 代码:

<!-- CSS menu -->
#cssmenu ul,
#cssmenu li,
#cssmenu span,
#cssmenu a {
  margin: 0;
  padding: 0;
  position: relative;
}
#cssmenu {
  line-height: 1;
  border-radius: 5px 5px 0 0;
  -moz-border-radius: 5px 5px 0 0;
  -webkit-border-radius: 5px 5px 0 0;
  background: #141414;
  text-align: center;
  background: -moz-linear-gradient(top, #333333 0%, #141414 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #333333), color-stop(100%, #141414));
  background: -webkit-linear-gradient(top, #333333 0%, #141414 100%);
  background: -o-linear-gradient(top, #333333 0%, #141414 100%);
  background: -ms-linear-gradient(top, #333333 0%, #141414 100%);
  background: linear-gradient(to bottom, #333333 0%, #141414 100%);
  border-bottom: 0px solid #0fa1e0;
  width: auto;
  font-size: 50px;
}
#cssmenu:after,
#cssmenu ul:after {
  content: '';
  display: block;
  clear: both;
}
#cssmenu a {
  background: #141414;
  background: -moz-linear-gradient(top, #333333 0%, #141414 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #333333), color-stop(100%, #141414));
  background: -webkit-linear-gradient(top, #333333 0%, #141414 100%);
  background: -o-linear-gradient(top, #333333 0%, #141414 100%);
  background: -ms-linear-gradient(top, #333333 0%, #141414 100%);
  background: linear-gradient(to bottom, #333333 0%, #141414 100%);
  color: #ffffff;
  display: block;
  font-family: Helvetica, Arial, Verdana, sans-serif;
  padding: 19px 20px;
  text-decoration: none;
}
#cssmenu ul {
  list-style: none;
}
#cssmenu > ul > li {
  display: inline-block;
  float: center;
  margin: 0;
}
#cssmenu.align-center {
  text-align: center;
}
#cssmenu.align-center > ul > li {
  float: none;
}
#cssmenu.align-center ul ul {
  text-align: left;
}
#cssmenu.align-right > ul {
  float: right;
}
#cssmenu.align-right ul ul {
  text-align: right;
}
#cssmenu > ul > li > a {
  color: #000000;
  font-size: 12px;
}
#cssmenu > ul > li:hover:after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  position: absolute;
  left: 50%;
  bottom: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid #0fa1e0;
  margin-left: -10px;
}
#cssmenu > ul > li:first-child > a {
  border-radius: 5px 0 0 0;
  -moz-border-radius: 5px 0 0 0;
  -webkit-border-radius: 5px 0 0 0;
}
#cssmenu.align-right > ul > li:first-child > a,
#cssmenu.align-center > ul > li:first-child > a {
  border-radius: 0;
  -moz-border-radius: 0;
  -webkit-border-radius: 0;
}
#cssmenu.align-right > ul > li:last-child > a {
  border-radius: 0 5px 0 0;
  -moz-border-radius: 0 5px 0 0;
  -webkit-border-radius: 0 5px 0 0;
}
#cssmenu > ul > li.active > a,
#cssmenu > ul > li:hover > a {
  color: #ffffff;
  box-shadow: inset 0 0 3px #000000;
  -moz-box-shadow: inset 0 0 3px #000000;
  -webkit-box-shadow: inset 0 0 3px #000000;
  background: #070707;
  background: -moz-linear-gradient(top, #262626 0%, #070707 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #262626), color-stop(100%, #070707));
  background: -webkit-linear-gradient(top, #262626 0%, #070707 100%);
  background: -o-linear-gradient(top, #262626 0%, #070707 100%);
  background: -ms-linear-gradient(top, #262626 0%, #070707 100%);
  background: linear-gradient(to bottom, #262626 0%, #070707 100%);
}
#cssmenu .has-sub {
  z-index: 1;
}
#cssmenu .has-sub:hover > ul {
  display: block;
}
#cssmenu .has-sub ul {
  display: none;
  position: absolute;
  width: 200px;
  top: 100%;
  left: 0;
}
#cssmenu.align-right .has-sub ul {
  left: auto;
  right: 0;
}
#cssmenu .has-sub ul li {
  *margin-bottom: -1px;
}
#cssmenu .has-sub ul li a {
  background: #0fa1e0;
  border-bottom: 1px dotted #31b7f1;
  font-size: 11px;
  filter: none;
  display: block;
  line-height: 120%;
  padding: 10px;
  color: #ffffff;
}
#cssmenu .has-sub ul li:hover a {
  background: #0c7fb0;
}
#cssmenu ul ul li:hover > a {
  color: #ffffff;
}
#cssmenu .has-sub .has-sub:hover > ul {
  display: block;
}
#cssmenu .has-sub .has-sub ul {
  display: none;
  position: absolute;
  left: 100%;
  top: 0;
}
#cssmenu.align-right .has-sub .has-sub ul,
#cssmenu.align-right ul ul ul {
  left: auto;
  right: 100%;
}
#cssmenu .has-sub .has-sub ul li a {
  background: #0c7fb0;
  border-bottom: 1px dotted #31b7f1;
}
#cssmenu .has-sub .has-sub ul li a:hover {
  background: #0a6d98;
}
#cssmenu ul ul li.last > a,
#cssmenu ul ul li:last-child > a,
#cssmenu ul ul ul li.last > a,
#cssmenu ul ul ul li:last-child > a,
#cssmenu .has-sub ul li:last-child > a,
#cssmenu .has-sub ul li.last > a {
  border-bottom: 0;
}

<div id='cssmenu'>
<ul>
	<li class='active has-sub'><a href='techniques.html'><span>Techniques</span></a>
		<ul>
			<li class='has-sub'><a href='attacks.html'><span>Attacks</span></a>
				<ul>
					 <li class='has-sub'><a href='Aclosehanded.html'><span>Close-Handed</span></a>
						<ul>
						   <li class='last'><a href='gyaku-tsuki.html'><span>Gyaku-Tsuki</span></a></li>
						   <li class='last'><a href='oi-tsuki.html'><span>Oi-Tsuki</span></a></li>
						   <li class='last'><a href='uraken.html'><span>Uraken</span></a></li>
						</ul>
					 </li>
					 <li class='has-sub'><a href='Aopenhanded.html'><span>Open-Handed</span></a>
						  <ul>
						   <li class='last'><a href='nukite.html'><span>Nukite</span></a></li>
						   <li class='last'><a href='shotei-uchi.html'><span>Shotei-Uchi</span></a></li>
						   <li class='last'><a href='shuto-uchi.html'><span>Shuto-Uchi</span></a></li>
						   <li class='last'><a href='soto-uchi.html'><span>Soto-Uchi</span></a></li>
						</ul>
					 </li>
					 <li class='has-sub'><a href='legs.html'><span>Leg</span></a>
						  <ul>
						   <li class='last'><a href='mae-geri.html'><span>Mae-Geri</span></a></li>
						   <li class='last'><a href='mawashi-geri.html'><span>Mawashi-Geri</span></a></li>
						   <li class='last'><a href='ushio-geri.html'><span>Ushio-Geri</span></a></li>
						   <li class='last'><a href='yoko-geri.html'><span>Yoko-Geri</span></a></li>
						</ul>
					 </li>
				</ul>
			</li>
			<li class='has-sub'><a href='defenses.html'><span>Deffenses</span></a>
				<ul>
					 <li class='has-sub'><a href='Dclosehanded.html'><span>Close-Handed</span></a>
						<ul>
						   <li class='last'><a href='age-uke.html'><span>Age-Uke</span></a></li>
						   <li class='last'><a href='gedan-uke.html'><span>Gedan-Uke</span></a></li>
						   <li class='last'><a href='uchi-uke.html'><span>Uchi-Uke</span></a></li>
						   <li class='last'><a href='yoko-uchi-uke.html'><span>Yoko-Uchi-Uke</span></a></li>
						</ul>
					</li>
					 <li class='has-sub'><a href='Dopenhanded.html'><span>Open-Handed</span></a>
						  <ul>
						   <li class='last'><a href='shuto-uke.html'><span>Shuto-Uke</span></a></li>
						   <li class='last'><a href='teiso-uke.html'><span>Teisho-Uke</span></a></li>
						</ul>
					 </li>
					 <li class='has-sub'><a href='defensebasics.html'><span>Deffense Basics</span></a>
						  <ul>
						   <li class='last'><a href='#'><span>1</span></a></li>
						   <li class='last'><a href='#'><span>2</span></a></li>
						   <li class='last'><a href='#'><span>3</span></a></li>
						   <li class='last'><a href='#'><span>4</span></a></li>
						</ul>
					 </li>
				</ul>
			</li>
			<li class='has-sub'><a href='katas.html'><span>Katas</span></a>
				<ul>
					 <li class='last'><a href='#'><span>1</span></a></li>
					 <li class='last'><a href='#'><span>2</span></a></li>
					 <li class='last'><a href='#'><span>3</span></a></li>
				</ul>
			</li>
			<li class='has-sub'><a href='movements.html'><span>Movements</span></a>
				<ul>
					 <li class='last'><a href='8directions.html'><span>8 Directions</span></a></li>
					 <li class='last'><a href='okuri-ashi.html'><span>Okuri-Ashi</span></a></li>
					 <li class='last'><a href='suri-ashi.html'><span>Suri-Ashi</span></a></li>
				</ul>
			</li>
			<li class='has-sub'><a href='positions.html'><span>Positions</span></a>
				<ul>
					 <li class='last'><a href='moto-dachi.html'><span>Moto-Dachi</span></a></li>
					 <li class='last'><a href='neko-ashi-dachi.html'><span>Neko-Ashi-Dachi</span></a></li>
					 <li class='last'><a href='shiko-dachi.html'><span>Shiko-Dachi</span></a></li>
					 <li class='last'><a href='zenkutsu-dachi.html'><span>Zenkutsu-Dachi</span></a></li>
				</ul>
			</li>
		</ul>
	</li>
	<li class='active has-sub'><a href='competition.html'><span>Competition</span></a>
		<ul>
			<li class='last'><a href='Ckata.html'><span>Kata</span></a></li>
			<li class='last'><a href='kumite.html'><span>Kumite</span></a></li>
		</ul>
	</li>
	<li class='active has-sub'><a href='history.html'><span>History</span></a>
		<ul>
			<li class='last'><a href='evolution.html'><span>Evolution</span></a></li>
			<li class='last'><a href='origins.html'><span>Origins</span></a></li>
			<li class='last'><a href='present.html'><span>Present</span></a></li>
		</ul>
	</li>
	<li class='active has-sub'><a href='otherstyles.html'><span>Other Styles</span></a>
		<ul>
			<li class='last'><a href='goju-ryu.html'><span>Goju-Ryu</span></a></li>
			<li class='last'><a href='shoto-kam.html'><span>Shoto-Kan</span></a></li>
		</ul>
	</li>
	<li class='active has-sub'><a href='philosophy.html'><span>Philosophy</span></a>
		<ul>
			<li class='last'><a href='inthedojo.html'><span>In the dojo</span></a></li>
			<li class='last'><a href='levels.html'><span>Levels</span></a></li>
		</ul>
	</li>
</ul>
</div>

现在是这样显示的:

我尝试将 font-size: 添加到某些菜单，但没有任何改变。我还查看了这里的其他一些问题，但我无法使我的代码适应他们推荐的解决方案。

关于如何使蓝色方 block 中的文本字体变大有什么想法吗？

Answer 1

如果您正在更改或添加 font-size 设置但它们没有生效，那是因为您的样式被更具体的选择器覆盖，您更改了错误的选择器，或者有一个你的 CSS 错误。除非你broke the internet .我所要做的就是更改这两个:#cssmenu > ul > li > a 和 #cssmenu .has-sub ul li a。

更新以解决您已编辑的问题
要更改蓝色框中菜单项的字体大小，您可以更改:

#cssmenu .has-sub ul li a {
   font-size: 24px;
}

/* The rest of this is for my embedded example */

@charset "utf-8";

<!-- CSS menu -->
#cssmenu ul,
#cssmenu li,
#cssmenu span,
#cssmenu a {
  margin: 0;
  padding: 0;
  position: relative;
}
#cssmenu {
  line-height: 1;
  border-radius: 5px 5px 0 0;
  -moz-border-radius: 5px 5px 0 0;
  -webkit-border-radius: 5px 5px 0 0;
  background: #141414;
  text-align: center;
  background: -moz-linear-gradient(top, #333333 0%, #141414 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #333333), color-stop(100%, #141414));
  background: -webkit-linear-gradient(top, #333333 0%, #141414 100%);
  background: -o-linear-gradient(top, #333333 0%, #141414 100%);
  background: -ms-linear-gradient(top, #333333 0%, #141414 100%);
  background: linear-gradient(to bottom, #333333 0%, #141414 100%);
  border-bottom: 0px solid #0fa1e0;
  width: auto;
  position: relative;
}
#cssmenu:after,
#cssmenu ul:after {
  content: '';
  display: block;
  clear: both;
}
#cssmenu a {
  background: #141414;
  background: -moz-linear-gradient(top, #333333 0%, #141414 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #333333), color-stop(100%, #141414));
  background: -webkit-linear-gradient(top, #333333 0%, #141414 100%);
  background: -o-linear-gradient(top, #333333 0%, #141414 100%);
  background: -ms-linear-gradient(top, #333333 0%, #141414 100%);
  background: linear-gradient(to bottom, #333333 0%, #141414 100%);
  color: #ffffff;
  display: block;
  font-family: Helvetica, Arial, Verdana, sans-serif;
  padding: 19px 20px;
  text-decoration: none;
}
#cssmenu ul {
  list-style: none;
}
#cssmenu > ul > li {
  display: inline-block;
  float: center;
  margin: 0;
}
#cssmenu.align-center {
  text-align: center;
}
#cssmenu.align-center > ul > li {
  float: none;
}
#cssmenu.align-center ul ul {
  text-align: left;
}
#cssmenu.align-right > ul {
  float: right;
}
#cssmenu.align-right ul ul {
  text-align: right;
}
#cssmenu > ul > li > a {
  color: #000000;
  font-size: 24px;
}
#cssmenu > ul > li:hover:after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  position: absolute;
  left: 50%;
  bottom: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid #0fa1e0;
  margin-left: -10px;
}
#cssmenu > ul > li:first-child > a {
  border-radius: 5px 0 0 0;
  -moz-border-radius: 5px 0 0 0;
  -webkit-border-radius: 5px 0 0 0;
}
#cssmenu.align-right > ul > li:first-child > a,
#cssmenu.align-center > ul > li:first-child > a {
  border-radius: 0;
  -moz-border-radius: 0;
  -webkit-border-radius: 0;
}
#cssmenu.align-right > ul > li:last-child > a {
  border-radius: 0 5px 0 0;
  -moz-border-radius: 0 5px 0 0;
  -webkit-border-radius: 0 5px 0 0;
}
#cssmenu > ul > li.active > a,
#cssmenu > ul > li:hover > a {
  color: #ffffff;
  box-shadow: inset 0 0 3px #000000;
  -moz-box-shadow: inset 0 0 3px #000000;
  -webkit-box-shadow: inset 0 0 3px #000000;
  background: #070707;
  background: -moz-linear-gradient(top, #262626 0%, #070707 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #262626), color-stop(100%, #070707));
  background: -webkit-linear-gradient(top, #262626 0%, #070707 100%);
  background: -o-linear-gradient(top, #262626 0%, #070707 100%);
  background: -ms-linear-gradient(top, #262626 0%, #070707 100%);
  background: linear-gradient(to bottom, #262626 0%, #070707 100%);
}
#cssmenu .has-sub {
  z-index: 1;
}
#cssmenu .has-sub:hover > ul {
  display: block;
}
#cssmenu .has-sub ul {
  display: none;
  position: absolute;
  width: 200px;
  top: 100%;
  left: 0;
}
#cssmenu.align-right .has-sub ul {
  left: auto;
  right: 0;
}
#cssmenu .has-sub ul li {
  *margin-bottom: -1px;
}
#cssmenu .has-sub ul li a {
  background: #0fa1e0;
  border-bottom: 1px dotted #31b7f1;
  font-size: 18px;
  filter: none;
  display: block;
  line-height: 120%;
  padding: 10px;
  color: #ffffff;
}
#cssmenu .has-sub ul li:hover a {
  background: #0c7fb0;
}
#cssmenu ul ul li:hover > a {
  color: #ffffff;
}
#cssmenu .has-sub .has-sub:hover > ul {
  display: block;
}
#cssmenu .has-sub .has-sub ul {
  display: none;
  position: absolute;
  left: 100%;
  top: 0;
}
#cssmenu.align-right .has-sub .has-sub ul,
#cssmenu.align-right ul ul ul {
  left: auto;
  right: 100%;
}
#cssmenu .has-sub .has-sub ul li a {
  background: #0c7fb0;
  border-bottom: 1px dotted #31b7f1;
}
#cssmenu .has-sub .has-sub ul li a:hover {
  background: #0a6d98;
}
#cssmenu ul ul li.last > a,
#cssmenu ul ul li:last-child > a,
#cssmenu ul ul ul li.last > a,
#cssmenu ul ul ul li:last-child > a,
#cssmenu .has-sub ul li:last-child > a,
#cssmenu .has-sub ul li.last > a {
  border-bottom: 0;
}

<div id='cssmenu'>
<ul>
    <li class='active has-sub'><a href='techniques.html'><span>Techniques</span></a>
        <ul>
            <li class='has-sub'><a href='attacks.html'><span>Attacks</span></a>
                <ul>
                     <li class='has-sub'><a href='Aclosehanded.html'><span>Close-Handed</span></a>
                        <ul>
                           <li class='last'><a href='gyaku-tsuki.html'><span>Gyaku-Tsuki</span></a></li>
                           <li class='last'><a href='oi-tsuki.html'><span>Oi-Tsuki</span></a></li>
                           <li class='last'><a href='uraken.html'><span>Uraken</span></a></li>
                        </ul>
                     </li>
                     <li class='has-sub'><a href='Aopenhanded.html'><span>Open-Handed</span></a>
                          <ul>
                           <li class='last'><a href='nukite.html'><span>Nukite</span></a></li>
                           <li class='last'><a href='shotei-uchi.html'><span>Shotei-Uchi</span></a></li>
                           <li class='last'><a href='shuto-uchi.html'><span>Shuto-Uchi</span></a></li>
                           <li class='last'><a href='soto-uchi.html'><span>Soto-Uchi</span></a></li>
                        </ul>
                     </li>
                     <li class='has-sub'><a href='legs.html'><span>Leg</span></a>
                          <ul>
                           <li class='last'><a href='mae-geri.html'><span>Mae-Geri</span></a></li>
                           <li class='last'><a href='mawashi-geri.html'><span>Mawashi-Geri</span></a></li>
                           <li class='last'><a href='ushio-geri.html'><span>Ushio-Geri</span></a></li>
                           <li class='last'><a href='yoko-geri.html'><span>Yoko-Geri</span></a></li>
                        </ul>
                     </li>
                </ul>
            </li>
            <li class='has-sub'><a href='defenses.html'><span>Deffenses</span></a>
                <ul>
                     <li class='has-sub'><a href='Dclosehanded.html'><span>Close-Handed</span></a>
                        <ul>
                           <li class='last'><a href='age-uke.html'><span>Age-Uke</span></a></li>
                           <li class='last'><a href='gedan-uke.html'><span>Gedan-Uke</span></a></li>
                           <li class='last'><a href='uchi-uke.html'><span>Uchi-Uke</span></a></li>
                           <li class='last'><a href='yoko-uchi-uke.html'><span>Yoko-Uchi-Uke</span></a></li>
                        </ul>
                    </li>
                     <li class='has-sub'><a href='Dopenhanded.html'><span>Open-Handed</span></a>
                          <ul>
                           <li class='last'><a href='shuto-uke.html'><span>Shuto-Uke</span></a></li>
                           <li class='last'><a href='teiso-uke.html'><span>Teisho-Uke</span></a></li>
                        </ul>
                     </li>
                     <li class='has-sub'><a href='defensebasics.html'><span>Deffense Basics</span></a>
                          <ul>
                           <li class='last'><a href='#'><span>1</span></a></li>
                           <li class='last'><a href='#'><span>2</span></a></li>
                           <li class='last'><a href='#'><span>3</span></a></li>
                           <li class='last'><a href='#'><span>4</span></a></li>
                        </ul>
                     </li>
                </ul>
            </li>
            <li class='has-sub'><a href='katas.html'><span>Katas</span></a>
                <ul>
                     <li class='last'><a href='#'><span>1</span></a></li>
                     <li class='last'><a href='#'><span>2</span></a></li>
                     <li class='last'><a href='#'><span>3</span></a></li>
                </ul>
            </li>
            <li class='has-sub'><a href='movements.html'><span>Movements</span></a>
                <ul>
                     <li class='last'><a href='8directions.html'><span>8 Directions</span></a></li>
                     <li class='last'><a href='okuri-ashi.html'><span>Okuri-Ashi</span></a></li>
                     <li class='last'><a href='suri-ashi.html'><span>Suri-Ashi</span></a></li>
                </ul>
            </li>
            <li class='has-sub'><a href='positions.html'><span>Positions</span></a>
                <ul>
                     <li class='last'><a href='moto-dachi.html'><span>Moto-Dachi</span></a></li>
                     <li class='last'><a href='neko-ashi-dachi.html'><span>Neko-Ashi-Dachi</span></a></li>
                     <li class='last'><a href='shiko-dachi.html'><span>Shiko-Dachi</span></a></li>
                     <li class='last'><a href='zenkutsu-dachi.html'><span>Zenkutsu-Dachi</span></a></li>
                </ul>
            </li>
        </ul>
    </li>
    <li class='active has-sub'><a href='competition.html'><span>Competition</span></a>
        <ul>
            <li class='last'><a href='Ckata.html'><span>Kata</span></a></li>
            <li class='last'><a href='kumite.html'><span>Kumite</span></a></li>
        </ul>
    </li>
    <li class='active has-sub'><a href='history.html'><span>History</span></a>
        <ul>
            <li class='last'><a href='evolution.html'><span>Evolution</span></a></li>
            <li class='last'><a href='origins.html'><span>Origins</span></a></li>
            <li class='last'><a href='present.html'><span>Present</span></a></li>
        </ul>
    </li>
    <li class='active has-sub'><a href='otherstyles.html'><span>Other Styles</span></a>
        <ul>
            <li class='last'><a href='goju-ryu.html'><span>Goju-Ryu</span></a></li>
            <li class='last'><a href='shoto-kam.html'><span>Shoto-Kan</span></a></li>
        </ul>
    </li>
    <li class='active has-sub'><a href='philosophy.html'><span>Philosophy</span></a>
        <ul>
            <li class='last'><a href='inthedojo.html'><span>In the dojo</span></a></li>
            <li class='last'><a href='levels.html'><span>Levels</span></a></li>
        </ul>
    </li>
</ul>
</div>