.edit_course{
        margin-bottom: 3px;
        margin-top: 10px;
        margin-left: 100px;
        padding: 5px 0px;
        width: 60px;
        font-size: 16px;
    }
.invite{

    font-size: 16px;
    width: 60px;
    padding: 0px;
    margin-left: 100px;
    margin-bottom: 3px;
    margin-top: 10px;
}
.skip{
    font-size: 16px;
    width: 60px;
    padding: 4px;
    margin-left: 100px;
    margin-top: 10px;
}
.preview{
    text-align: center;
    padding: 5px 0px; 
    width: 60px;
    margin-left: 70px;   
}
@media all and (max-width: 500px) {
    .tbl_responsive {
       max-width: 200px;            
    }
}
    
@media screen and (max-width: 750px) and (min-width: 500px) {
    .preview{
        margin-left: 240px;
    }
    .edit_course{
        margin-left: 240px;
    }
     .skip, .invite {
        margin-left: 240px;
    }   
}
@media all and (min-width: 1000px) {
    .edit_course{
        padding: 5px 0px;
        width: 60px;
        font-size: 14px;
        margin-left: 60px;
    }
    .invite{
        font-size: 16px;
        width: 60px;
        padding: 0px;
        margin-left: -2px;
    }
    .skip{
        font-size: 16px;
        width: 60px;
        padding: 4px;
        margin-left: -20px;
    }
}

.send_invitation_list_border{
    border-bottom: 2px solid #8CC73F;
    padding-top: 10px;
    padding-bottom: 10px;
    font-weight: bold
}
#loading_image{
    padding: 0px;
    height: 300px;
    position: absolute;
    z-index: 1;
    width: 100%;
    line-height: 300px;
}

