<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <h1>The flex-shrink Property</h1> <div id="main"> <div style="background-color:coral;"></div> <div style="background-color:lightblue;"></div> <div style="background-color:khaki;"></div> <div style="background-color:pink;"></div> <div style="background-color:lightgrey;"></div> </div> </div>

#main { width: 350px; height: 100px; border: 1px solid #c3c3c3; display: -webkit-flex; /* Safari */ display: flex; } #main div { -webkit-flex-grow: 1; /* Safari 6.1+ */ -webkit-flex-shrink: 1; /* Safari 6.1+ */ -webkit-flex-basis: 100px; /* Safari 6.1+ */ flex-grow: 1; flex-shrink: 1; flex-basis: 100px; } #main { width: 350px; height: 100px; border: 1px solid #c3c3c3; display: -webkit-flex; /* Safari */ display: flex; } #main div { -webkit-flex-grow: 1; /* Safari 6.1+ */ -webkit-flex-shrink: 1; /* Safari 6.1+ */ -webkit-flex-basis: 100px; /* Safari 6.1+ */ flex-grow: 1; flex-shrink: 1; flex-basis: 100px; } #main div:nth-of-type(2) { -webkit-flex-shrink: 3; /* Safari 6.1+ */ flex-shrink: 3; }