*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* navbar */
.navbar img{
width: 50px !important;
}
.nav-icon{
    background-color: darkblue;
}

.nav-icon2{
    background-color: red;
} 
.nav-icon3{
    background-color: rgb(60, 0, 128);
}
.nav-icon4{
    background-color:green;
}

/* body */

/* corsi */
.demo{
    color: #3f3d76 !important;
    background-color: #f2f2f2 !important;
}

/* quiz */
.flag img{
    width: 50px;
}
.flag1 img{
    width: 30px;
}
.della img{
    width: 60px;
}
.true {
    border:2px solid rgb(9, 46, 148) !important;
}