tweetdeck.css

.column:nth-child(1) {
    width: 600px;
}

.column:nth-child(1) .item-box:not(:hover) .tweet-footer {
    display: none;
}

.column:nth-child(1) .js-stream-item-content {
    padding: 3px;
}

.column:nth-child(1) .media-preview, .column:nth-child(1) .quoted-tweet {
    margin: 0 10px;
    min-width: 250px;
    width: 250px;
}

.column:nth-child(1) .tweet-body {
    display: flex;
}

.column:nth-child(1) .tweet-context {
    position: absolute;
    right: 40px;
}

.column:nth-child(1) .tweet-text {
    width: 100%;
}