在制作后台登录页的时候,需要从网页上面把那个圆角矩形框选取下来,然后通过Photoshop进行切割,在进行设置,最后得到需要的登录框的圆角矩形框。如下图。
但是登录最新的智囊团的那个登录页面的时候,上面的那个圆角矩形框已经没有了,最新的登陆页面跟QQ邮箱登录页面一样,没有了圆角矩形框。所以我就想到了用css自己堆出来一个圆角矩形框,通过查找资料,以及自己的一些使用方法的改进,最终得到了自己所需要的圆角矩形框??纯CSS设计圆角矩形框。
下面讲一下思路:圆角矩形框的难点就在于如何把那个圆角表示出来,其实我们把那个圆角的地方放大一下就会发现,所谓的圆角并不是严格的圆角,只是由于线条看起来比较和谐,那个圆角其实也是直角的框的那个直角。
这就是一个放大了的圆角矩形框,可以看到圆角的具体构成。
明白了原理,下面是代码的实现部分,非常简单:
<span style="font-family:KaiTi_GB2312;font-size:24px;"> <div class="divbox"> <div class="div1"></div> <div class="div2"></div> <div class="divmiddle"> 主要内容 </div> <div class="div2"></div> <div class="div1"></div> </div></span>
<span style="font-family:KaiTi_GB2312;font-size:24px;">/*圆角框的制作-CSS代码部分*/.divbox { width: 580px; }/*.div1 .div2 .divmiddle{ float :right ;}*/.div1 { background: #999999; border-left: #999999 solid 3px; border-right: solid 3px #999; margin: 0px 6px; height: 3px; overflow: hidden;}.div2 { background: #FFF; border-left: #999999 solid 3px; border-right: solid 3px #999; margin: 0px 2px; height: 3px; overflow: hidden;}.divmiddle { height: 285px; border-left: #999999 solid 3px; border-right: solid 3px #999;}.divmiddle p,h3,btnLogin,btnCancel{ float :right ;}</span>
通过代码可以看出,圆角矩形框通过3类的div标签进行组合设计,最终形成一个圆角矩形框。这里关键的是overflow属性,是把被覆盖的内容给隐藏了,所以可以露出自己需要的部分,这里的技巧需要读者自己思考。
接下来就是实战了,在middle中添加如下代码:
<span style="font-family:KaiTi_GB2312;font-size:24px;"><h3 id="牛腩新闻发布系统后台登录">牛腩新闻发布系统后台登录</h3> <img src="/static/imghwm/default1.png" data-src="Images/步枪.jpg" class="lazy" alt="logo" style="max-width:90%" style="max-width:90%"> <p>用户名:<textbox id="txtUserName" runat="server"></textbox></p> <p>密 码:<textbox id="txtPassword" runat="server" textmode="Password"></textbox></p> <p>验证码:123456<textbox id="txtCode" runat="server" cssclass="txtcode" width="104px"></textbox></p> <p><button id="btnLogin" runat="server" text="登录"></button><button id="btnCancel" runat="server" text="取消"></button></p> <div><div class="footer">版权声明:©<a href="http://niunun.javaeve.com">牛腩</a> &<a href="http://www.tg029.com" target="blank">众志网</a> </div></div></span>
按照正常的理解,在圆角矩形框中会出现一系列的控件,事实上也是如此,但是却出现了另外一个问题,如下图:
圆角矩形框的边出现了空白,这是由于在使用了
,在这个正常流中这个部分的宽度比较大,把左右两边的正常流的边给撑开了,所以出现了断线的部分。那么只要把的部分从正常流中拿走就可以改正这个缺点,对,就是float属性,下面的效果是经过我半个下午2个小时的不断调试,最终形成的结果:
的部分从正常流中拿走就可以改正这个缺点,对,就是float属性,下面的效果是经过我半个下午2个小时的不断调试,最终形成的结果:
通过float属性,浮动控件,然后再重新进行定位,这样的效果看似简单,后面包含的过程却是对自己知识的一个总结提升,这个过程对我来说非常享受,全身心的投入到最后的效果出来,感觉那真是爽。当然了这个设计效果还是有提升空间的,比如把整个的框移到垂直方向上的中间线,等等,那就发挥你的想象力吧。
版权声明:本文为博主原创文章,未经博主允许不得转载。

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

The roles of HTML, CSS and JavaScript in web development are: HTML is responsible for content structure, CSS is responsible for style, and JavaScript is responsible for dynamic behavior. 1. HTML defines the web page structure and content through tags to ensure semantics. 2. CSS controls the web page style through selectors and attributes to make it beautiful and easy to read. 3. JavaScript controls web page behavior through scripts to achieve dynamic and interactive functions.

HTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.

HTML is the cornerstone of building web page structure. 1. HTML defines the content structure and semantics, and uses, etc. tags. 2. Provide semantic markers, such as, etc., to improve SEO effect. 3. To realize user interaction through tags, pay attention to form verification. 4. Use advanced elements such as, combined with JavaScript to achieve dynamic effects. 5. Common errors include unclosed labels and unquoted attribute values, and verification tools are required. 6. Optimization strategies include reducing HTTP requests, compressing HTML, using semantic tags, etc.

HTML is a language used to build web pages, defining web page structure and content through tags and attributes. 1) HTML organizes document structure through tags, such as,. 2) The browser parses HTML to build the DOM and renders the web page. 3) New features of HTML5, such as, enhance multimedia functions. 4) Common errors include unclosed labels and unquoted attribute values. 5) Optimization suggestions include using semantic tags and reducing file size.

WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.


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