.dropbtn {
  color: white;
  padding: 16px;
  font-size: 16px;
  border: none;
  cursor: pointer;
}

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
  z-index: 1;
  background: #ffff;
}

.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}
.dropbtn {
  color: black;
  padding: 16px;
  font-size: 18px;
  border: none;
  cursor: pointer;
  padding-top: 7px;
}

.dropdown-content a:hover {
  background-color: #f1f1f1;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown:hover .dropbtn {
  color: #0d6efd !important;
}

.hrsep1 {
  width: 250px;
  height: 4px;
  background: #d5d5d5;
  margin: 2px 4px;
}
.banner-right {
  background: #ffffff;
  padding: 15px 20px;
  height: 400px;
  overflow-y: scroll;
  border-radius: 10px;
}
ul.listcourses {
  list-style: none;
  padding: 0 0 0 10px;
}
ul.listcourses li {
  padding: 0px 5px 15px 25px;
  font-size: 16px;
  color: #333;
  position: relative;
  border-left: 1px solid #cccccc;
  line-height: 20px;
  margin-top: -3px;
}
ul.listcourses li:before {
  content: "\f111";
  font-family: FontAwesome;
  display: inline-block;
  font-size: 14px;
  position: absolute;
  left: -6px;
  top: -3px;
  color: #03c200;
}
.nav-item .nav-link {
  display: inline-block;
  color: #343a40;
  text-decoration: none;
}

.navbar-custom {
  padding: 4px 0px;
  width: 100%;
  border-radius: 0px;
  z-index: 999;
  margin-bottom: 0px;
  -webkit-transition: all 0.5s ease-in-out;
  transition: all 0.5s ease-in-out;
  background-color: #fff;
  -webkit-box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
  -webkit-transition: all 0.25s ease-in-out;
  -moz-transition: all 0.25s ease-in-out;
  -o-transition: all 0.25s ease-in-out;
  -ms-transition: all 0.25s ease-in-out;
  transition: 0.25s ease-in-out;
}

.navbar-brand {
  padding-top: 0;
  padding-bottom: 0;
}

.navbar-custom .logo .logo-dark {
  display: none;
}

.navbar-custom .logo .ligo-light {
  display: inline-block;
}
nav .dropbtn ,
.navbar-custom .navbar-nav li a {
  line-height: 26px;
  font-size: 17px;
  font-weight: 500;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  background-color: transparent !important;
  padding: 6px 0;
  margin: 0 5px;
  /*font-family: 'Muli', sans-serif;*/
}

.navbar-custom .navbar-nav li .nav-link {
  padding-right: 0px;
  padding-left: 0px;
}

.navbar-custom .navbar-nav li.active a,
.navbar-custom .navbar-nav li a:hover,
.navbar-custom .navbar-nav li a:active {
  color: #fff !important;
}

.navbar-custom .navbar-toggles {
  padding: 0.25rem 0.75rem;
  font-size: 18px;
  background: 0 0;
  border: 1px solid transparent;
  color: #fff;
  outline: 0;
}

.navbar-light .navbar-toggler:before {
  width: 30px;
  height: 2px;
  background-color: #151515;
  backface-visibility: hidden;
  border-radius: 0;
}
.navbar-toggler {
  font-size: 24px;
  margin-top: 5px;
  margin-bottom: 0px;
  color: #fff;
}

.nav .open > a,
.nav .open > a:focus,
.nav .open > a:hover {
  background-color: transparent;
  border-color: #5e62ff;
}
.navbar-light .navbar-nav li.active a,
.navbar-light .navbar-nav li a:hover,
.navbar-light .navbar-nav li a:active {
  color: #0d6efd !important;
}
.nav .dropbtn,
nav a {
  font-size: 17px;
  color: black !important;
}
nav .dropbtn {
  border: none;
  background: transparent;
}
nav .dropbtn:focus,
nav .dropbtn:hover,
nav .dropbtn:active {
  border: none;
  outline: none;
}
nav .dropdown {
  background: transparent;
  box-shadow: unset;
}
 .nav-link {
        color: #fff !important; 
    }
     .nav-link1 {
        color: black; 
    }
    
    <!----*********************************************---->

@media (max-width: 768px) {
  .logo img {
    height: 60px;
  }

  ul {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-left: 0;
  }

  ul li {
    margin: 5px 0;
  }
}