html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
}

.m-0 { 
    margin: 0;
}

.imgbox {
    display: grid;
    height: 100%;
    margin-right: 130px;
}
.center-fit {
    max-width: 100%;
    max-height: 100vh;
    margin: auto;
}