r1pt1d3,
количество классов избыточно ...
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
.faq_collumn{
height: 522px;
width: 350px;
float: left;
margin-left: 40px;
}
.faq_info{
width: 350px;
height: auto;
min-height: 65px;
max-height: 350px;
border-radius: 4px;
box-shadow: 0 0 10px rgba(0,0,0,0.6);
background-color: #FF4538;
float: left;
margin-bottom: 40px;
cursor: pointer;
}
#faq_info_holder{
width: 1200px;
margin: auto;
}
.faq_name{
font: 22px georgia;
color: white;
margin: 0;
margin-left: 25px;
margin-top: 20px;
}
.material-icons-add_circle{
float: right;
color: white;
font-size: 32px;
margin-right: 15px;
margin-top: -4px;
}
.material-icons-add_circle:after{
content: "+";
}
.material-icons-remove_circle{
float: right;
color: white;
font-size: 32px;
margin-right: 15px;
margin-top: -4px;
}
.material-icons-remove_circle:after{
content: "-";
}
.hiden_faq{
font: 16px georgia;
color: white;
float: left;
margin-left: 25px;
margin-right: 55px;
margin-bottom: 20px;
display: none;
}
.active{
background: #DD3C30;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(function() {
$(".faq_info").click(function() {
$(this).toggleClass("active").find(".hiden_faq").slideToggle("normal");
$(".faq_info").not(this).removeClass("active").find(".hiden_faq").slideUp("normal");
$(".faq_info").not(this).find(".material-icons-remove_circle").addClass("material-icons-add_circle").removeClass("material-icons-remove_circle");
if ($(this).hasClass("active")) $(this).find(".material-icons-add_circle").addClass("material-icons-remove_circle").removeClass("material-icons-add_circle");
else $(this).find(".material-icons-remove_circle").addClass("material-icons-add_circle").removeClass("material-icons-remove_circle")
})
});
</script>
</head>
<body>
<div id="faq_info_holder">
<div class="faq_collumn">
<a class="faq_info">
<div>
<p class="faq_name">Tempor incididunt
<i class="material-icons-add_circle"></i>
</p>
<span class="hiden_faq">
....
</span>
</div>
</a>
</div>
</div>
<div id="faq_info_holder">
<div class="faq_collumn">
<a class="faq_info">
<div>
<p class="faq_name">Tempor incididunt
<i class="material-icons-add_circle"></i>
</p>
<span class="hiden_faq">
....
</span>
</div>
</a>
</div>
</div>
</body>
</html>