.img-fluid{max-width:100%;height:auto;display:block}.btn{display:inline-block;padding:10px 24px;font-size:16px;font-weight:600;border-radius:2px;border:none;background:#28a7e9;color:#fff;text-decoration:none;transition:background .2s;cursor:pointer}.btn-secondary{background:#222;color:#fff;border:1px solid #28a7e9}.btn-secondary:hover{background:#28a7e9;color:#fff}.clear{clear:both}.center{text-align:center;margin-left:auto;margin-right:auto}