mastodon.css

body,
body.system-font {
    font-family: sans-serif;
}

.column {
    flex-grow: 1;
}

.status__content {
    line-height: 1.8 !important;
    outline: none !important;
}

.drawer {
    max-width: 300px;
}

.notification__display-name {
    font-weight: 600;
}

.account__avatar,
.account__avatar-overlay-base, 
.account__avatar-overlay-overlay {
    border-radius: 0;
}