I'm working on a random quote web app and I can't center the image horizontally. Usually, this is acquired using mx-auto. My image is inside a div with size col-12, and the div is inside a row. However, image still not centering. If anyone can point out what am I missing? thanks link http://pctechtips.org/apps/quotes/ code
<html><head>
<meta charset="UTF-8">
<title>Random Quotes Generator</title>
<!-- bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- fontawesome -->
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.0.13/css/all.css" integrity="sha384-DNOHZ68U8hZfKXOrtjWvjxusGo9WQnrNx2sqG0tfsghAvtVlRW3tvkXWZh58N9jp" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css?family=Cinzel" rel="stylesheet">
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<link href="https://fonts.googleapis.com/css?family=Allura" rel="stylesheet">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<div class="container">
<h1 class="col-lg-12 header_text text-primary text-center">Daily Quotes</h1>
<row>
<div class="col-12">
<img src="http://pctechtips.org/apps/quotes/aristoteles.jpg" class="img-fluid mx-auto image">
</div>
</row>
<div class="row">
<p class="col-12 sub_text text-center text-primary">Drops of wisdom!</p>
</div>
<div class="col-3 center">
<button id="getMessage" class="btn btn-primary">Get quote!</button>
</div>
<br>
<div class="col-8 mx-auto">
<div id="content" class="row col-12 text"></div>
<div id="author" class="row col-12 text"></div>
</div>
<!-- buttons -->
<div class="container">
<div class="row">
<div class="col-4 text-right">
<a class="btn btn-info btn-social">
<i class="fas fa-chevron-left"></i>
</a>
</div>
<div class="col-4 text-center">
<a class="btn btn-info btn-social btn-twitter mx-auto" href="https://twitter.com/intent/tweet?text=With the realization of ones own potential and self-confidence in ones ability, one can build a better world. Dalai Lama" target="_blank">
<i class="fa fa-twitter"></i>
</a>
</div>
<div class="col-4 text-left">
<a class="btn btn-info btn-social">
<i class="fas fa-chevron-right"></i>
</a>
</div>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="js/index.js"></script>
</body></html>
css
body {
background-color: #354048;
}
/*.test {
border-style: solid;
}*/
.container {
padding-top: 50px;
}
.header_text {
/*font-family: 'Allura';*/
font-family: 'Cinzel', serif;
font-size: 60px;
font-weight: bold;
}
.text-primary {
color: #29c0ec!important;
}
.sub_text {
font-family: 'Cinzel', serif;
font-size: 25px;
font-weight: bold;
}
#getMessage {
font-size: 18px;
}
.image {
width: 160px;
height: 180px;
border-radius: 300px;
border-color: #29c0ec;
border-width: 3px;
border-style: solid;
}
.center {
margin-left: auto;
margin-right: auto;
text-align: center;
}
.text {
color: white;
font-family: 'Verdana';
font-size: 20px;
}
i {
color: white;
}
.btn {
font-size: 35px;
border-radius: 70px;
}
