.mitad {
    width: 300px;
}

.tres-logos {
    margin: 15px;
    margin-top: 0px;
}

.tres-logos img {
    max-height: 120px;
    margin: 15px;
}

.tres-logos img:last-child {
    max-height: 75px;
}

body {
    height: calc(100vh);
    overflow-y: auto;
}