/* .v3 header {
    background-repeat: no-repeat;
    background-position: right bottom;
    background-size: 300px;
    position: relative;
    background-image: url('img/Schermata%202020-07-23%20alle%2015.31.54.png');
} */
.v3 header {
    height: 43rem;
}

@media screen and (min-width:992px) {
    .v3 header {
        position: fixed;
        top: 0;
        left: 0;
        width: 45%;
        height: calc(100Vh - 4.25rem);
        background-size: auto;
    }

    .v3 main {
        width: 55%;
        min-height: calc(100Vh - 4.25rem);
        float: right;
    }

    .v3 footer {
        width: 100%;
        position: fixed;
        bottom: 0;
    }
}

.v3 header .col-auto {
    background-image: url('img/digitateaching.jpg');
    background-repeat: no-repeat;
    background-position: center bottom;
    background-size: contain;
}