index.css

html {
    background: #e2fdf4;
    text-align: center;
}

header img {
    height: 8rem;
}

.introtext {
    margin: 0 10rem;
}

.downloads {
    width: 50rem;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-direction: row;
    background: #8080804d;
    border-radius: 2rem;
}

.webengine {
    border-right: 1px solid black;
    background: #0095007a;
    border-radius: 2rem;
}

.webkit {
    width: 90%;
}

.downloads div {
    padding: 1rem;
    min-height: 20rem;
    position: relative;
}

.downloads button {
    margin-top: 1rem;
    bottom: 0px;
    position: unset;
    padding: 1rem 5rem;
    border: none;
    border-radius: 0.5rem;
    background: #004cff5e;
    display: block;
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

table {
    margin-left: auto;
    margin-right: auto;
}