body{ padding-top: 92px; }
.btn { border-radius: 0px; }
.title-page { width: 100%; display: block; margin-bottom: 20px; }
.text-center { text-align: center; }
.color-white { color: white !important; }
.w100 { width: 100%; }
.mb20 { margin-bottom: 20px; }
.mb10 { margin-bottom: 10px; }
.mr10 { margin-right: 10px; } 
.item-course { border-color: #000;padding: 10px; }
.btn-success { background: green !important; border-color: green !important; }
.btn-primary { border-radius: 0px; background-color: #40a3e2 !important; color: #f5f8fa !important; border-color: #40a3e2 !important; }
.bg-dark {     background: #000 !important; }
.video-iframe iframe { width: 100%; }
.prelative { position: relative; }

.navbar-dark .navbar-nav .nav-link {color: #fff !important;}

ul, li { list-style: none; padding: 0px; }
.pl0 { padding-left: 0px !important; }
.pr0 { padding-right: 0px !important; }