html - Last child not working as expected with p tag -

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i have issue using :last-child class p tag, works fine other classed p tags, here's code:

<div class="port-container">     <div class="header"><h1>portfolio</h1></div>     <p class="header" ref="who">who i?</p>     <p class="info" ref="who">...</p>     <p class="header" ref="what">what do?</p>     <p class="info" ref="what">...</p>     <p class="header" ref="projects">current projects?</p>     <p class="info" ref="projects">...</p>     <p class="header" ref="conntact">contact me</p>     <p class="info" ref="conntact">...</p> </div> <img class="bg-button pull-center" bg-toggle="false" src="./assets/icon-bg_white.png" title="toggle background" />

my css:

.pull-center {                 position:absolute;                 margin:auto auto;                 top:0;bottom:0;                 left:0;right:0; }  div.port-container {                 width:975px;                 height:auto;                 overflow:auto;                 margin:auto auto; }                 div.port-container > .bg-toggle {                                 background-color:rgba(44,62,80,0.25);                                 border-color:rgba(0,0,0,0.5) !important;                 }                 div.port-container > div.header {                                 height:200px;                                 line-height:200px;                                 border:solid 1px #fff;                                 border-top-left-radius:5px;                                 border-top-right-radius:5px;                                 text-align:center;                                 color:#fff;                 }                 div.port-container > p.header {                                 padding:10px;                                 border-bottom:solid 1px #fff;                                 border-left:solid 1px #fff;                                 border-right:solid 1px #fff;                                 color:#fff;                                 cursor:pointer;                 }                 div.port-container > p.header:last-child { /*<----- issue */                                 border-bottom-left-radius:5px;                                 border-bottom-right-radius:5px;                 }                 div.port-container > p.header.active {                                 border-bottom-left-radius:0px;                                 border-bottom-right-radius:0px;                 }                 div.port-container > p.info {                                 padding:10px;                                 border:solid 1px #fff;                                 border-top:none;                                 display:none;                                   color:#fff;                 }                 div.port-container > p.info:last-child { /*<----- works fine */                                 border-bottom-left-radius:5px;                                 border-bottom-right-radius:5px;                 } img.bg-button {                 width:32px;                 height:32px;                 top:auto;left:auto; }

note: ref attribute used in jquery

tl;dr:

this works fine:

div.port-container > p.info:last-child {     border-bottom-left-radius:5px;     border-bottom-right-radius:5px; }

but doesn't:

div.port-container > p.header:last-child {     border-bottom-left-radius:5px;     border-bottom-right-radius:5px; }

p.info:last-child matches p.info elements last children of parent.

in markup, p.header not last children of parent while p.header matches various elements, p.header:last-child match none.

unfortunately, there no :last-of-its-class selector. matching not possible unless make assumptions html structure. made one:

p.header:nth-last-child(2) { }

it matches p.header elements second last children of parent. note requires css3 selectors support.

p { background: #ccc; }  p.info:last-child { background: #fc0; }  p.header:nth-last-child(2) { background: #fc6; }
<div class="port-container">    <div class="header"><h1>portfolio</h1></div>    <p class="header" ref="who">who i?</p>    <p class="info" ref="who">...</p>    <p class="header" ref="what">what do?</p>    <p class="info" ref="what">...</p>    <p class="header" ref="projects">current projects?</p>    <p class="info" ref="projects">...</p>    <p class="header" ref="conntact">contact me</p>    <p class="info" ref="conntact">...</p>  </div>


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