.pb-50 {
    padding-top: 50px;
}

.wrong-answer {
    color: red;
}

.card-body h5{
 font-size: 28px;
}

.masthead {
 padding-top: 60px!important;
}

nav {
position: fixed!important;
    top: 0;
    width: 100%;
    z-index: 100;
}

.breadcrumb {
	margin-top: 95px;
}

.breadcrumb{
    padding-right: 10px!important;
}
.breadcrumb{padding:8px 15px;margin-bottom:20px;list-style:none;background-color:#f5f5f5;border-radius:4px}.breadcrumb>li{display:inline-block}.breadcrumb>li+li:before{padding:0 5px;color:#ccc;content:"/\00a0"}.breadcrumb>.active{color:#777}