<section?class="gray-section">
????<div?class="article-preview">
????????<div?class="img-section">
????????????<img?src="assets/pic01.jpg"/>
????????</div>
????????<div?class="text-section">
????????????<h3>又一個標題</h3>
????????????<div?class="sub_heading">又一個子標題</div>
????????????<p>Lorem?ipsum?dolor?sit?amet,?consectetur?adipisicing?elit.?Amet?dolores?eveniet?nisi?reprehenderit
????????????????similique?suscipit?tempore.</p>
????????</div>
????</div>
????<div?class="article-preview">
????????<div?class="text-section">
????????????<h3>又一個標題</h3>
????????????<div?class="sub_heading">又一個子標題</div>
????????????<p>Lorem?ipsum?dolor?sit?amet,?consectetur?adipisicing?elit.?Amet?dolores?eveniet?nisi?reprehenderit
????????????????similique?suscipit?tempore.</p>
????????</div>
????????<div?class="img-section">
????????????<img?src="assets/pic02.jpg"/>
????????</div>
????</div>
????<div?class="article-preview">
????????<div?class="img-section">
????????????<img?src="assets/pic03.jpg"/>
????????</div>
????????<div?class="text-section">
????????????<h3>又一個標題</h3>
????????????<div?class="sub_heading">又一個子標題</div>
????????????<p>Lorem?ipsum?dolor?sit?amet,?consectetur?adipisicing?elit.?Amet?dolores?eveniet?nisi?reprehenderit
????????????????similique?suscipit?tempore.</p>
????????</div>
????</div>
</section>

.gray-section{
????background:?#30363e;
}
.gray-section:nth-child(odd){
????background-color:rgba(255,255,255,.1);
}

.article-preview:after?{
????content:?"";
????display:?block;
????clear:?both;
}
.img-section?{
????width:?45%;
????font-size:0;
}

.img-section?img?{
????width:?100%;
}

.text-section?{
????position:?relative;
????top:?40px;
????left:?40px;
????width:?55%;
????letter-spacing:?1px;
????color:?#fff;
}

.text-section?>?*?{
????max-width:?90%;
}

.text-section?.sub_heading?{
????margin-top:?20px;
}
.article-preview?>?div?{
????float:?left;
}

查看chrome控制臺發現樣式沒有應用到元素上