#course {
    max-width: 45%;
    width: auto;
}

.middle {
  transition: .5s ease;
  opacity: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  text-align: center;
}


.tag1:hover .middle {
  opacity: 1;
}

@media(max-width:768px){
.our-course .course ul li {
    max-width: 100%!important;
    width:auto;
}
#course {

    max-width: 100%!important;
    width:auto;
    
}


}