I have this elements:
#first {background-color: red; position: fixed}
#second {background-color: green; opacity: 50%}
<div id="first">first</div>
<div id="second">second</div>
but first element getting behind of second element.
I have this elements:
#first {background-color: red; position: fixed}
#second {background-color: green; opacity: 50%}
<div id="first">first</div>
<div id="second">second</div>
but first element getting behind of second element.