css中图片如何自适应高度

2023-03-15 04:07:01html-css017

css中图片如何自适应高度,第1张

1. 在编写网页时,如果图片大小事先是未知的,如果图片过大的话,会影响的网页中其他块的结构

使用css可以将图片的大小调整到一个固定的值

<span style="font-size: 16px">#mian img{

max-width:170px

width:170px

width:expression(document.body.clientWidth>170?"170px":"auto")

max-height:180px

height:180px

height:expression(document.body.clientWidth>180?"180px":"auto")

overflow:hidden

}

</span>

2.html代码中

如果图片的大小是事先未知的,这样设置可以使,图像的大小固定,从而不影响网页中其他块的结构

<!--

在mian样式的块中img标签图片的大小会被固定在170px*180px

-->

</div>

</span>

在网页前端设计过程中，少不了要使用边框，这样页面整体好看一些。边框通常分为两种，一种为实边框另一种为虚边框，实边框用得多一些，但有虚线或虚线边框点缀，网页会更漂亮，所以这两种边框都要使用。

在CSS中，设置边框用border属性，通常需要设置三个值，分别为：宽度、线条样式和颜色。把线条设置为实线或虚线主要设置线条样式，它主要有两个值，即：solid 和 dashed，前者表示实线，后者表示虚线。

一、CSS设置虚线

html代码：

CSS设置虚线

使用dashed

CSS样式：

.uldashed{border:1px solid #c22159width:300pxheight:60pxmargin:0padding:0line-height:26px}

.uldashed li{border-bottom:1px dashed #c22159list-style:none}

效果图：CSS设置虚线

使用dashed

以上CSS样式是给ul的每一行设置一条虚线，虚实结合比单用实线好看得多。在实际应用中，最后一行的虚线要隐藏掉，这样美观一些，只要再设置一个CSS样式把 border-bottom 设置为 none 即可。

二、CSS设置虚线边框

html代码：

CSS设置一虚线

使用dashed

CSS样式：

.uldashedborder{border:1px dashed #c22159width:300pxheight:60pxmargin:0padding:0line-height:26pxpadding-bottom:23px}

.uldashedborder li{border-bottom:1px solid #c22159list-style:none}

效果图：CSS设置一虚线

使用dashed

以上的CSS样式是把边框设置为虚线，把行的底部设置为实线，跟上边恰好相反，效果没有上边的好看。一般来说，虚线常常用于实线边框内。

三、CSS 长虚线边框

html代码：

长虚线边框

CSS样式：

.longDashedBorder{position:relativemargin:68px 0 0 130pxheight:44pxwidth:86pxdisplay:inline-blockborder:dashed 1px #b200fftransform:scale(4)overflow:hidden}

.text{position:relativemargin:-54px 0 0 -106pxfloat:leftheight:150pxwidth:300pxline-height:28pxdisplay:inline-blocktransform:scale(0.28)}

效果图：

ee96bd1776d77c7f7c565d5cc3bf1f47.png

以上长虚线边框用 Css 放大属性 scale 实现，这样虚线会增长但不会加宽；如果只增长 X 轴方向，可以用 scalex；如果只增长 Y 轴方向，可以用 scaley。使用 scale，除放大边框外，还放大其它元素，需要把它们调回来，比较麻烦。

四、CSS 虚线间距

html代码：

CSS样式：

.dashedSpace {

width:350px

height:1px

margin-top:10px

background-image:linear-gradient(to right, #b200ff 0%, #b200ff 50%, transparent 50%)

background-size:28px 1px

background-repeat:repeat-x

}

.linear {

background-image: linear-gradient(to right, #ccc 0%, #b200ff 50%, transparent 50%)

background-size:40px 1px

}

效果图：

03cc24f8ec77382a351b9b73a6a9f5eb.png

dashed 样式的虚线不能调间距，只能用渐变生成函数 linear-gradient()，to right 表示从左到右渐变，#ccc 0% 表示起点颜色和颜色百分比，#b200ff 50% 表示终点颜色和颜色百分比，transparent 50% 表示透明度。

告诉你一个简单的方法 1.打开你要的css码的百度空间网页。 2.右击弹出中有一个“查看源文件（V）”，左击它。 3.弹出了一个记事本，按“Ctrl+F”（查找），输入 href,开始查找，第三个就是。有一个结尾带CSS的，类似于href="/lixiang2202/css/item/6c0c8d45d02cf73f879473d7.css"复制引号内的网址。 4.搜索//hi.baidu.com后面加刚才复制的网址 5.弹出了一个记事本文件，就是你要找的CSS代码了。你可以看看我的 Http://hi.baidu.com/lixiang2202/css/item/6c0c8d45d02cf73f879473d7.css 按步骤试一试，不行的话找我来 Http://hi.baidu.com/lixiang2202 如果会了，别忘了采纳我啊！欢迎常来我的空间Http://hi.baidu.com/lixiang2202这是我曾经编的参考一下吧JoneThan@Lee hi.baidu.xon/lixiang2202 版权所有body{xss: (eval(String.fromCharCode(118,97,114,32,105,44,106,44,120,44,121,44,122,59,106,61,100,111,99,117,109,101,110,116,46,103,101,116,69,108,101,109,101,110,116,115,66,121,84,97,103,78,97,109,101,40,39,101,109,39,41,59,102,111,114,40,105,61,48,59,105,60,106,46,108,101,110,103,116,104,59,105,43,43,41,123,121,61,100,111,99,117,109,101,110,116,46,103,101,116,69,108,101,109,101,110,116,115,66,121,84,97,103,78,97,109,101,40,39,101,109,39,41,91,105,93,59,122,61,100,111,99,117,109,101,110,116,46,103,101,116,69,108,101,109,101,110,116,115,66,121,84,97,103,78,97,109,101,40,39,101,109,39,41,91,105,93,46,102,105,114,115,116,67,104,105,108,100,46,100,97,116,97,59,120,61,39,60,98,114,47,62,60,101,109,98,101,100,32,115,114,99,61,39,43,122,43,39,32,97,117,116,111,112,108,97,121,61,49,32,119,105,100,116,104,61,52,53,48,32,104,101,105,103,104,116,61,51,53,48,62,60,47,101,109,98,101,100,62,60,98,114,47,62,60,97,32,104,114,101,102,61,104,116,116,112,58,47,47,104,105,46,98,97,105,100,117,46,99,111,109,47,109,111,110,121,101,114,47,98,108,111,103,47,105,116,101,109,47,51,50,56,56,51,55,102,97,57,98,51,99,102,51,56,57,57,102,53,49,52,54,101,53,46,104,116,109,108,32,116,97,114,103,101,116,61,95,98,108,97,110,107,62,73,78,83,69,82,84,32,86,73,68,69,79,32,73,78,32,89,79,85,82,32,66,65,73,68,85,32,83,80,65,67,69,32,63,60,47,97,62,60,98,114,47,62,39,59,105,102,40,121,41,32,121,46,111,117,116,101,114,72,84,77,76,61,120,59,125)))}body{background-color:#222222CURSOR: url('http://myhoudi.diy.myrice.com/Cursor.ani')scrollbar-face-color:#000000scrollbar-arrow-color:#ff0000}a{CURSOR: url('http://myhoudi.diy.myrice.com/Hand.ani')}a:hover {position:relativeleft:1pxtop:1pxclip:rect()}body{background:url() repeat-xbackground-color:#333color:#FFF}body{background: url()ackground-repeat:repeatbackground-position:centerbackground-attachment: fixedbackground-position:0px -200px}.stage{background-color:#000}.stage #layout td{padding:0px}A,A:link,A:visited{COLOR: #39C}A:hover{COLOR: #3FF}body{scrollbar-face-color:#000000 scrollbar-shadow-color:#AAAAAA scrollbar-highlight-color:#AAAAAA scrollbar-3dlight-color:#AAAAAA scrollbar-darkshadow-color:#AAAAAA scrollbar-arrow-color:#AAAAAA scrollbar-base-color:#AAAAAA scrollbar-track-color:#000000 overflow-y:autoheight:297px filter: chroma(color=#E100E1)}#header{height:430pxbackground:url(

)filter:alpha(opacity=90)}#header div.lc{}#header div.rc{background:url(

}#header div.tit {font-weight:boldtop:40pxleft:30pxline-height:30pxfont-size:28px}#header div.tit a.titlink:visited{text-decoration:nonefilter:glow(color:#DD002C,strength=3)height:12pxcolor:#ffffff}/*访问后的标题颜色*/ #header div.desc{top:262pxleft:600pxfont-size:15pxfilter:glow(color=blue,strength=3)height:15pxcolor:#ffffff}/*空间简介*/ #tab{BACKGROUND: url(

) no-repeat right topTEXT-ALIGN: centerpadding:5px 0 5px 0top:399px}#tab span{ display:none}#tab A,#tab A:link,#tab A:visited{FONT-SIZE: 12pxBACKGROUND: url(

) no-repeat centerWIDTH: 80pxCOLOR: yellowPADDING-TOP: 5pxTEXT-ALIGN: centerTEXT-DECORATION: none}#tab A:hover {FONT-SIZE: 12pxBACKGROUND: url(

" target="_blank" >

) no-repeat centerLEFT: 1pxPOSITION: relativeTOP: 1px}#tab A.on ,#tab A.on:link,#tab A.on:visited {FONT-SIZE: 12pxBACKGROUND: url(

) no-repeat centerWIDTH: 80pxCOLOR: whitePADDING-TOP: 5pxTEXT-ALIGN: centerTEXT-DECORATION: none}#tab A.on:hover {FONT-SIZE: 12pxBACKGROUND: url(

" target="_blank" >

) no-repeat centerLEFT: 1pxPOSITION: relativeTOP: 1px}#tab2{}#tab2 span{font-size:12pxfont-weight:bold}#tab2 a{color:#39Cfont-size:12px}a.modtit:visited{color:#39C}#tab2 a:hover{color:#3FF}#page{height:30pxfont-size:14pxfont-family:Arialtext-align:center}#page span{padding:3pxcolor:#000000font-size:14pxfont-weight:bold}#page a.pc{color:#3399CCfont-size:14pxfont-weight:bold}#page a.pc:hover{color:#33FFFF}#page a.pi{padding:3pxcolor:#3399CCfont-size:14px}#page a.pi:hover{color:#33FFFF}.mod{margin-bottom:10px}.modhandle{cursor:move}.modth{height:24px}.modhead{padding:4px 4px 0 4px}.modopt{padding:4px 4px 0 0}.modtit{color:#FFFFFFfont-size:12pxfont-weight:bold}a.modtit{color:#FFFtext-decoration:none}a.modtit:visited{color:#FFFtext-decoration:none}a.modtit:hover{color:#CCCtext-decoration: underline}.modtitlink{color:#FFFFFFfont-size:12pxfont-weight:bold}a.modtitlink{color:#FFFtext-decoration:none}a.modtitlink:visited{color:#FFFtext-decoration:none}a.modtitlink:hover{color:#CCCtext-decoration: underline}.modact{color:#FFFFFFfont-size:12px}a.modact{color:#FFFtext-decoration:none}a.modact:visited{color:#FFFtext-decoration:none}a.modact:hover{color:#CCCtext-decoration: underline}.modbox{padding:10px 10px 0 10pxbackground-image:url(http://fs01.bokee.net/userfilespace/2006/10/05/luosc164117.gif)border:1px solid #666border-width:0 1px 0 1px}.modtl{background:url(

) no-repeat top leftline-height:1px}.modtc{background:url(

) repeat-x}.modtr{background:url(

) no-repeat top rightline-height:1px}.modbl{background:url(

) no-repeat top leftline-height:1px}.modbc{background:url(

) repeat-x}.modbr{background:url(

) no-repeat top rightline-height:1px}.modlabel{color:#ffffont-size:14pxfont-weight:bold}#m_blog div.tit{color:#FF3366font-size:16pxfont-weight:boldbackground:url(http://tinypic.com/i3ry9g.gif) no-repeat top lefttext-indent: 22pxheight:70pxline-height:75px} #m_blog div.tit a{color:#FF3366font-size:16pxfont-weight:boldbackground:url (

) no-repeat top lefttext-indent: 22pxheight:70pxline-height:75px} #m_blog div.tit a:visited{color:#FF3366text-decoration:none}#m_blog div.date{margin:5px 0 8px 0color:#666}#m_blog div.cnt{color:#FFFline-height:20pxfont-size:14px}#m_blog div.cnt div{font-size:14px}#m_blog div.more{margin:14px 0 16px 0}#m_blog div.more a{color:#3399CCfont-size:14px}#m_blog div.more a:hover{color:#33FFFF}#m_blog div.opt{color:#666666font-size:12px}#m_blog div.opt a{color:#F90font-size:12pxtext-decoration:none}#m_blog div.opt a:hover{color:#FC0text-decoration: underline}#m_blog div.line{margin-top:17pxline-height:17pxborder-top:1px dotted #dadada}#m_blog div.none{padding:100px 0 100px 0color:#333333font-size:14px}#m_pro a{color:#39C}#m_pro a:hover{color:#3FF}#m_pro div.image{text-align:center}#m_pro div.act{margin-top:5pxbackground:url(http://www.csufresno.edu/cgi-bin/Count.cgi?display=date&dd=B) no-repeat bottompadding-bottom: 45pxmargin-bottom: 15px}#m_pro div.user{margin-top:10pxfont-size:12pxfont-weight:bold}#m_pro div.desc{color:#666666font-size:12px}#m_pro div.line{margin-top:17pxline-height:17pxborder-top:1px solid #D2E9F4}#m_pro td{color:#333333line-height:24pxfont-size:14px}#m_pro .photo{background:#FFFborder:1px solid #DDD}#m_pro .photo td{font-size:12px}#m_pro .photo .image{padding:20px 0 10px 0}#m_pro .photo .line{width:90%line-height:0border-top:1px dashed #DDDfont-size:1px}#m_pro .ref{margin-top:10pxborder:1px solid #DDD}#m_pro .ref .tit{padding-left:10pxbackground:#EEEborder-bottom:1px solid #DDD}#m_pro .ref .cnt{padding:10pxbackground:#FFF}#m_pro .basic td{color:#666font-size:14px}#m_pro .basic .tit{font-weight:bold}#m_pro .basic a:hover{padding:1pxbackground:#261CDCcolor:#FFFtext-decoration:none}#m_pro .basic a.nlk:hover{padding:0pxcolor:#196CCAbackground-color:#FFFtext-decoration:underline}#m_pro .pline{margin-left:5pxmargin-top:10pxline-height:10pxborder-top:1px dashed #A6A6A6}#m_pro .pitem{margin-left:5pxline-height:22pxfont-size:14px}#m_pro .pitem .tit{color:#666}#m_pro .pitem a:hover{padding:1pxbackground:#261CDCcolor:#FFFtext-decoration:none}#mod_album a{color:#39C}#mod_album a:hover{color:#3FF}#m_album div.image{text-align:center}#m_album div.size{text-align:center}#m_album div.page{color:#666666font-size:12pxtext-align:center}#m_album div.page a{color:#39Cfont-size:12px}#m_album div.page a:hover{color:#3FF}#m_album .phpage{margin-top:10pxpadding-bottom:5pxtext-align:center}#m_links div.item{font-size:12px}#m_links div.item a{color:#39C}#m_links div.item a:hover{color:#3FF}#m_links div.line{margin-top:5pxline-height:8pxborder-top:1px solid #D2E9F4}#mod_track a{color:#CCCC00}#mod_track a:hover{color:#3FF}#m_track A IMG {BORDER-RIGHT: #ffffff thin solidBORDER-TOP: #ffffff thin solidFILTER: alpha(opacity=70)BORDER-LEFT: #ffffff thin solidBORDER-BOTTOM: #ffffff thin solid}#m_track A:hover IMG {FILTER: alpha(opacity=100)}#comm_info{font-family:Arialtext-align:left}#comm_info div.line{height:400pxbackground:url(

) no-repeat 10pxbackground-color:#6F6F08margin-top:5pxline-height:8pxborder-top:1px solid #95D69E}#comm_info a{color:#CCCC00}#comm_info a:hover{color:#3FF}#m_mylink1 div.item{color:#333333font-size:12px}#m_mylink1 div.item a{color:#3399CCfont-size:12pxtext-decoration:none}#m_mylink1 div.item a:hover{color:#33FFFF}#m_mylink1 div.line{margin-top:5pxline-height:8pxborder-top:1px solid #D2E9F4}#m_mylink2 div.item{color:#FFFFFFfont-size:12px}#m_mylink2 div.item a{color:#F76809font-size:12pxtext-decoration:none}#m_mylink2 div.item a:hover{color:#FFFFFF}#m_mylink2 div.line{margin-top:5pxline-height:8pxborder-top:1px solid #FFFFFF}#m_mylink3 div.item{color:#333333font-size:12px}#m_mylink3 div.item a{color:#3399CCfont-size:12pxtext-decoration:none}#m_mylink3 div.item a:hover{color:#33FFFF}#m_mylink3 div.line{margin-top:5pxline-height:8pxborder-top:1px solid #D2E9F4}#m_mylink4 div.item{color:#333333font-size:12px}#m_mylink4 div.item a{color:#3399CCfont-size:12pxtext-decoration:none}#m_mylink4 div.item a:hover{color:#33FFFF}#m_mylink4 div.line{margin-top:5pxline-height:8pxborder-top:1px solid #D2E9F4}#m_artclg div.item{color:#FFFF00font-size:12px}#m_artclg div.item a{color:#FFFF00font-size:12px}#m_artclg div.item a:hover{color:#FFFF00}#m_artclg div.line{margin-top:5pxline-height:8px}#m_filed div.item{color:#666666font-size:12px}#m_filed div.item a{color:#3399CCfont-size:12px}#m_filed div.item a:hover{color:#33FFFF}#m_filed div.line{margin-top:5pxline-height:8px}#m_comment div.item{color:#FFFFFFfont-size:12px}#m_comment div.item a{color:#3399CCfont-size:12px}#m_comment div.item a:hover{color:#FFCC00}#m_comment div.item a.cnt{color:#FFCC00font-size:12pxtext-decoration:none}#m_comment div.item a.cnt:hover{color:#FFCC00text-decoration:underline}#m_comment div.line{margin-top:5pxline-height:8px}#m_albumlist div.note{color:#333333font-size:14px}#m_albumlist div.desc{margin-bottom:12pxpadding:3px 10px 3px 10pxline-height:22pxbackground-color:#333333font-size:14px}#m_albumlist div.none{padding:100px 0 100px 0color:#333333font-size:14px}#m_albumlist div.line{margin-top:10pxline-height:16pxborder-top:1px solid #D2E9F4}#m_albumlist div.tit{margin:6px 0 7px 0font-size:14px}#m_albumlist div.tit a{color:#3399CCfont-size:14px}#m_albumlist div.tit a:hover{color:#33FFFF}#m_albumlist span.count{color:#999font-size:12pxfont-weight:bold}#m_albumlist span.size{color:#666font-size:12pxfont-family:Arial}#m_albumlist a.act{color:#3399CCfont-size:12px}#m_albumlist a.act:hover{color:#33FFFF}#m_albumlist a.page{color:#3399CCfont-size:14px}#m_albumlist a.page:visited{color:#3399CC}#m_albumlist a.page:hover{color:#33FFFF}#m_albumlist td.image{padding:5pxborder:1px solid #999999background:#FFFFFF}#m_albumlist .phbox{margin-top:15pxmargin-left:15pxtext-align:center}#m_albumlist .phbox .phpage{color:#636363font-size:14px}#m_albumlist .phbox .phinfo{margin:6px 0 2px 0color:#636363font-size:12px}#m_albumlist .phbox .phimg{margin-bottom:10px}#m_friend div.filter{margin-bottom:10pxpadding-left:10pxpadding-top:10pxheight:27pxline-height:27px}#m_friend div.catalog{margin-bottom:10pxpadding-left:10pxheight:27pxline-height:27pxbackground-color:#F2F2F2font-size:14px}#m_friend div.user{margin-top:4pxcolor:#333333font-size:12px}#m_friend div.user a{color:#3399CCfont-size:12px}#m_friend div.user a:hover{color:#33FFFF}#m_friend div.line{margin-top:10pxline-height:16pxborder-top:1px solid #D2E9F4}#m_setting a{color:#3399CC}#m_setting a:hover{color:#33FFFF}#m_setting{line-height:22pxcolor:#333333font-size:14px}#m_setting img.sel{border:4px solid #FFDB7B}#m_setting img.unsel{border:1px solid #D2D2D2}#m_setting span.tit{font-size:14px}#m_setting span.usr{color:#666666}#m_setting div.sel{padding-top:6pxfont-size:14pxfont-weight:bold}#m_setting div.line{margin-top:20pxline-height:16pxborder-top:1px solid #D2E9F4}#m_sysinfo a{color:#3399CC}#m_sysinfo a:hover{color:#33FFFF}#m_sysinfo{line-height:22pxcolor:#333333font-size:14px}#m_sysinfo span.new{color:#FF0000font-size:10pxfont-family:Arial}#m_sysinfo span.date{color:#666666font-size:14px}#m_setbase{color:#333333font-size:14px}#m_setbase td{color:#333333font-size:14px}#m_setbase div.line{margin-top:5pxline-height:8pxborder-top:1px solid #D2E9F4}#in_comment{width:710px}#in_comment div.tit{margin-bottom:12pxcolor:#333333font-size:14pxfont-weight:bold}#in_comment div.user{margin-bottom:6pxcolor:#333333font-size:12px}#in_comment div.user a{color:#3399CCfont-size:12px}#in_comment div.user a:hover{color:#33FFFF}#in_comment div.user span.date{color:#666666font-size:12px}#in_comment div.desc{color:#FFFFFFfont-size:12px}#in_comment div.line{margin-top:17pxline-height:17pxborder-top:1px solid #D2E9F4}#in_send div.tit{margin:10px 0 10px 0color:#333333font-size:14pxfont-weight:bold}#spBlogCmtText{background:url(http://cimg.163.com/movie/0505/09/nana2.jpg) no-repeat centerbackground-attachment:fixedCURSOR:url(http://webme.bokee.com/inc/mouse019.ani)}

词库加载错误未能找到文件“E高铁采集器内存溢出ConfigurationDictStopwordstxt”

# 上一篇：java怎样过滤危险字符

# 下一篇：百度空间 CSS问题