HTML 和 CSS 代码优化：解决常见问题

<p>&quot;&lt;div style=&quot;width:100%; height:32px; background-color:#2d2d2d; display:flex; justify-content: flex-end;&quot; class=&quot;main&quot;&gt;&lt;div class=&quot;item&quot;&gt;&lt;a href=&quot;${pageContext.request.contextPath}/Login_Register&quot;&gt;登录</a></div>&lt;div class=&quot;item&quot;&gt;&lt;a href=&quot;${pageContext.request.contextPath}/TEXT.jsp&quot;&gt;注册</a></div>&lt;div class=&quot;item&quot;&gt;&lt;a href=&quot;${pageContext.request.contextPath}/TEXT.jsp&quot;&gt;产品测试</a></div>&lt;div class=&quot;item&quot;&gt;&lt;a href=&quot;${pageContext.request.contextPath}/TEXT.jsp&quot;&gt;我的</a></div>&lt;div class=&quot;item&quot;&gt;&lt;a href=&quot;${pageContext.request.contextPath}/TEXT.jsp&quot;&gt;</a></div></div><style>.main{color:#fcfcfc;font-family:&quot;方正胖娃简体&quot;;font-size:20px;border-spacing: 10px 5px;}</style>&quot;There are a few issues with your code:\n\n1. The <code>width</code> and <code>height</code> properties are mentioned twice in the <code>style</code> attribute of the <code>div</code>. You only need to mention them once.\n2. In the <code>justify-content</code> property, there should be a space after the colon (<code>:</code>) for better readability.\n3. The <code>class</code> attribute should be written as <code>class=\&quot;main\&quot;</code>, without any spaces before or after the equals sign.\n4. The <code>&lt;a&gt;</code> tags inside the <code>&lt;div&gt;</code> elements are not properly closed. You need to add the text or elements that should be displayed within the <code>&lt;a&gt;</code> tags.\n5. The CSS properties should be separated by a semicolon (<code>;</code>), but there is no semicolon after the <code>justify-content</code> property.\n\nHere is the corrected code:\n\n<code>html\n&lt;div style=\&quot;width:100%; height:32px; background-color:#2d2d2d; display:flex; justify-content: flex-end;\&quot; class=\&quot;main\&quot;&gt;&lt;div class=\&quot;item\&quot;&gt;&lt;a href=\&quot;${pageContext.request.contextPath}/Login_Register\&quot;&gt;登录&lt;/a&gt;&lt;/div&gt;&lt;div class=\&quot;item\&quot;&gt;&lt;a href=\&quot;${pageContext.request.contextPath}/TEXT.jsp\&quot;&gt;注册&lt;/a&gt;&lt;/div&gt;&lt;div class=\&quot;item\&quot;&gt;&lt;a href=\&quot;${pageContext.request.contextPath}/TEXT.jsp\&quot;&gt;产品测试&lt;/a&gt;&lt;/div&gt;&lt;div class=\&quot;item\&quot;&gt;&lt;a href=\&quot;${pageContext.request.contextPath}/TEXT.jsp\&quot;&gt;我的&lt;/a&gt;&lt;/div&gt;&lt;div class=\&quot;item\&quot;&gt;&lt;a href=\&quot;${pageContext.request.contextPath}/TEXT.jsp\&quot;&gt;&lt;/a&gt;&lt;/div&gt;&lt;/div&gt;\n\n&lt;style&gt;\n.main {\n    color: #fcfcfc;\n    font-family: \&quot;方正胖娃简体\&quot;;\n    font-size: 20px;\n    border-spacing: 10px 5px;\n}\n&lt;/style&gt;\n</code>\n\nNow the code should work properly.</p>