.topic_closed_access_deny {
    color: red;
}
.block-content-topicclosed-users {
    max-height: 300px;
    overflow: auto;
}
.block-content-topicclosed-users-user {
    float: left;
    text-align: center;
    padding: 1%;
    border-radius: 8px;
}
.block-content-topicclosed-users-user img {
    width: 32px;
    border-radius: 2px;
}
.block-content-topicclosed-users-user img:hover {
    box-shadow: 0 0 5px rgba(0,0,0,0.5);
}