body { max-width: 500px; margin: 0 auto; position: relative; }
div#own { position: relative; }
#logs { border: solid 1px grey; height: 400px; background-color: #eee; overflow: scroll; }
.avatar { width:50px; border-radius: 50%; -webkit-border-radius: 50%; -moz-border-radius: 50%; }