main {
    display: grid;
    grid-template-columns: 65% 35%;
}

main > div {
    padding: 2%;
    overflow: auto;
}

.events {
    display: grid;
    grid-auto-rows: 14em;
    grid-template-columns: repeat(auto-fit, 18em);
    grid-gap: 0.8em;
}

.event {
    position: relative;
}

.event a {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    text-decoration: none;
}

.event img {
    position: absolute;
    object-position: center;
    object-fit: cover;
    height: 100%;
    width: 100%;
    transition: 0.5s;
}

.event:hover img {
    filter: grayscale(0.8) brightness(0.4);
}

.event .summary {
    opacity: 0;
    z-index: 1;
    font-weight: bold;
    text-align: center;
    color: white;
    transition: 0.5s;
}

.event:hover .summary {
    opacity: 1;
}