html - Using CSS to change a class background but only if it is not after a h4 -

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i trying change background colour of paragraph 4 only. want leave paragraph 2 alone (because after h4). have tried not selector can't seem logic working right. not wanting use javascript, php or jquery. pure css please.

.widget-wrap > .widget-title {    background-color: yellow;  }  .widget-title + .textwidget {    background-color: red;  }
<div class="widget-wrap">    <h4 class="widget-title">paragraph 1 in div.</h4>    <p class="textwidget">paragraph 2 in div.</p>    <p>paragraph 3 in div.</p>  </div>    <div class="widget-wrap">    <p class="textwidget">paragraph 4 inside 2nd div.</p>    <p>paragraph 5 inside 2nd div.</p>  </div>

if first child of .widget-wrap either h4.widget-title, or p.textwidget (i.e. when h4 not present), use :first-child:

.widget-wrap > .widget-title {    background-color: yellow;  }  .widget-wrap > .textwidget:first-child {    background-color: red;  }
<div class="widget-wrap">    <h4 class="widget-title">paragraph 1 in div.</h4>    <p class="textwidget">paragraph 2 in div.</p>    <p>paragraph 3 in div.</p>  </div>    <div class="widget-wrap">    <p class="textwidget">paragraph 4 inside 2nd div.</p>    <p>paragraph 5 inside 2nd div.</p>  </div>

if there other elements may appear before first p.textwidget absent h4.widget-title, complicate things slightly. use :not() sibling selector in case, if there can variable number of elements, won't able reliably.


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