child selector
HTML
<div class="header">
<h1>
welcome dear
</h1>
<div class="child">
<h1>
This is child
</h1>
</div>
<div class="child2">
<h1>
This is child
</h1>
</div>
</div>CSS
.header > .child{
color: blue;
}
.header .child2{
color: green;
}