html,
body {
  height: 100%;
}

body {
  display: flex;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  color:#000;
  background-color: #f5f5f5;
}

main {
  width: 100%;
  max-width: 500px;
  padding: 15px;
  margin: auto;
}

#conversations {
    width: 100%;
    background-color: #FFFFFF;
    height: 400px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    list-style:none;
    margin:0;
    padding:0;
    text-align:left;
    border-bottom:none;
}

#conversations li {
    padding: 8px;
    font-size: .75em;
    line-height: 1.5;
}

#chatform {
    padding-bottom: 12px;
}
 #chatform input#nickname {
  border-top-left-radius: 0;
}