haraka/haraka-plugin-watch

.tipsy {
  font-size: 10px;
  position: absolute;
  padding: 5px;
  word-wrap: break-word;
  z-index: 100000;
}
.tipsy-inner {
  background-color: #000;
  color: #fff;
  max-width: 200px;
  padding: 5px 8px 4px 8px;
  text-align: center;
}

/* Rounded corners */
.tipsy-inner {
  border-radius: 3px;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
}

/* Uncomment for shadow */
/*.tipsy-inner { box-shadow: 0 0 5px #000000; -webkit-box-shadow: 0 0 5px #000000; -moz-box-shadow: 0 0 5px #000000; }*/

.tipsy-arrow {
  position: absolute;
  width: 0;
  height: 0;
  line-height: 0;
  border: 5px dashed #000;
}

/* Rules to colour arrows */
.tipsy-arrow-n {
  border-bottom-color: #000;
}
.tipsy-arrow-s {
  border-top-color: #000;
}
.tipsy-arrow-e {
  border-left-color: #000;
}
.tipsy-arrow-w {
  border-right-color: #000;
}

.tipsy-n .tipsy-arrow {
  top: 0px;
  left: 50%;
  margin-left: -5px;
  border-bottom-style: solid;
  border-top: none;
  border-left-color: transparent;
  border-right-color: transparent;
}
.tipsy-nw .tipsy-arrow {
  top: 0;
  left: 10px;
  border-bottom-style: solid;
  border-top: none;
  border-left-color: transparent;
  border-right-color: transparent;
}
.tipsy-ne .tipsy-arrow {
  top: 0;
  right: 10px;
  border-bottom-style: solid;
  border-top: none;
  border-left-color: transparent;
  border-right-color: transparent;
}
.tipsy-s .tipsy-arrow {
  bottom: 0;
  left: 50%;
  margin-left: -5px;
  border-top-style: solid;
  border-bottom: none;
  border-left-color: transparent;
  border-right-color: transparent;
}
.tipsy-sw .tipsy-arrow {
  bottom: 0;
  left: 10px;
  border-top-style: solid;
  border-bottom: none;
  border-left-color: transparent;
  border-right-color: transparent;
}
.tipsy-se .tipsy-arrow {
  bottom: 0;
  right: 10px;
  border-top-style: solid;
  border-bottom: none;
  border-left-color: transparent;
  border-right-color: transparent;
}
.tipsy-e .tipsy-arrow {
  right: 0;
  top: 50%;
  margin-top: -5px;
  border-left-style: solid;
  border-right: none;
  border-top-color: transparent;
  border-bottom-color: transparent;
}
.tipsy-w .tipsy-arrow {
  left: 0;
  top: 50%;
  margin-top: -5px;
  border-right-style: solid;
  border-left: none;
  border-top-color: transparent;
  border-bottom-color: transparent;
}