border-top-width：4px solid red是设置上边框4px。
border-top-width：4px solid red是设置上边框4px。
相关考题：
在CSS语言中下列哪一项是“左边框“的语法?() A、border-left-width:(值)B、border-top-width:(值)C、border-left:(值)D、border-top-width:(值)
以下关于样式表项的定义中,错误的是:()。 A.H1, H2 {color:red}B.H1 B{color:red}C.H1#color_red{color:red}DA:Active {color:red}
可以设置超链接被点击过后样式是红色字体的是()。 A.a:link{color:red}B.a:hover{color:red}C.a:visited{color:red}D.a:active{color:red}
在路由器当中打开路由功能的命令是() A.Red-Giant（config）#iproutingB.Red-Giant（config）#iprouteC.Red-Giant（config）#ipadderssD.Red-Giant#iprouting
Which statement concerning the lashings of containers with solid bar or wire rope lashings is TRUE ________．A.Stack weights should be less when using a solid bar lashing as compared to a wire lashingB.Stack heights may be increased when using a solid bar lashingC.Stack heights should be reduced when using a solid bar lashingD.Solid bars should be used for lashing the first tier only，with wire lashings on the higher tier（s）
哪一个html盒模型中的border的正确写法？（）A、p{ border:5px solid red;} B、p{border:5px br red solid; }C、p{border: red solid 5px; } D、p{border: solid red 5px; }
When using a lightning arrestor， connect which type of ground wire to a good earth ground？（）A、#6 solid copperB、#12 solid copperC、#20 solid copperD、#22 solid copper
On a cisco aironet 1230 series autonomous access point， the status led is solid red， and the ethernet and radio leds are both off. What does this indicate？（）A、a firmware upgrade is in progress.B、the internal radio has failed.C、an access point buffer overflow is occurring.D、the access point is booting.
Red Hat Enterprise Linux版本分为（）。A、Red Hat Enterprise LinuxASB、Red Hat Enterprise LinuxESC、Red Hat Enterprise LinuxBSD、Red Hat Enterprise LinuxWS
要设置以访问过的连接颜色为红色，下列选项正确的是（）。A、A：link{color：red}B、A：active{color：red}：C、A：visited{color：red}D、A：visite（color：red）
以下样式写法正确的是（）。A、〈div class=’box’〉〈/div〉B、〈div class=’boxleft’〉〈/div〉C、〈div id=’box’〉〈/div〉D、〈div style=’border：1px solid red’〉〈/div〉
border-color：red；border-style：solid；border-width：3px；可以简写为（）。A、border-color：red solid 3pxB、border-style：red solid 3pxC、border-width：red solid 3pxD、border：red solid 3px
要想设置上边框1像素红色虚线的语法结构（）。A、border-top：1px solid red；B、border-left：1px solid red；C、border-top：1px dashed red；D、border-top：1px solid blue；
根据div{width：276px；padding：8px；border：1px solid red；margin：5px；}这个占据的页面空间的宽度（）。A、304pxB、284pxC、286pxD、306px
以下选项中哪个是给p标签添加颜色的jQuery语法（）。A、$（"p"）.css（"color"，"red"）B、p.css（"color"，"red"）C、p.style.color="red"D、p.style="red"
在HTML中，下面（）是已被访问过呈红色文字的样式。A、a：link{color：red；}B、a：hover{color：red；}C、a：visited{color：red；}D、a：active{color：red；}
单选题On a Cisco Aironet 1230 Series autonomous access point， the Status LED is solid red， and the Ethernet and Radio LEDs are both off. What does this indicate？（）AA firmware upgrade is in progress.BThe internal radio has failed.CAn access point buffer overflow is occurring.DThe access point is booting.
单选题The emulsion of the oil is mainly caused by （）.Athe solid impurities of large particleBthe solid impurities of fine particleCthe water contentDboth water and solid impurities
单选题A combination or all-purpose nozzle produces（）.Alow-velocity fog onlyBa solid stream onlyCa solid stream and foamDa solid stream and fog
单选题When using a lightning arrestor， connect which type of ground wire to a good earth ground？（）A#6 solid copperB#12 solid copperC#20 solid copperD#22 solid copper
单选题Bleeding from a vein is（）.Adark red and has a steady flowBbright red and slowCbright red and spurtingDdark red and spurting
单选题Crankshafts of medium speed engines are （） from a single piece of steel.Aunusually solid weldedBnever be solid forgedCalmost invariably solid forgedDalmost invariably be welded
单选题在HTML中，下面（）是已被访问过呈红色文字的样式。Aa：link{color：red；}Ba：hover{color：red；}Ca：visited{color：red；}Da：active{color：red；}