#main{
    height: 100%;
}
#courses-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr; 
  gap: 20px;
  padding: 20px;
}
#course-div{
    padding: 25px; 
    border-radius: 12px; 
    box-shadow: 0 4px 12px rgba(0,0,0,0.1); 
    transition: 0.3s; 
    background: #fff;
}
.pagination{
    margin: 0 auto;
}
#course-name-a{
    text-decoration: none;
    color: inherit;
}
#search-form-div{
    justify-content: center;
    display: flex;
}
#search-form-div form{
    display: flex;
}
#search-form-div input{
    font-size: 18px;
    border-radius: 10px;
    padding-left: 2%;
    border: 1px solid black;
}
#search-form-div input:focus{
    outline-color: #18bc9c;
}
#search-form-div button{
    margin-left: 3%;
    border: 0px;
    background-color: #18bc9c;
    cursor: pointer;
    border-radius: 10px;
    width: 100%;
    color: white;
    padding: 3px;
}
@media (max-width: 768px){
    #courses-list{
        grid-template-columns: repeat(1, 1fr);
    } 
}