#container {
  display: block;
  margin: 0 auto;
  margin-top: 50px;
  max-width: 800px;
  text-align: justify;
}
hr { display: block; height: 1px;
    border: 0; border-top: 1px solid #000000;
    margin: 1em 0; padding: 0;
}
.tooltip {
  position: relative;
  display: inline-block;
  border-bottom: 1px dotted black;
}

.tooltip .tooltiptext {
  visibility: hidden;
  background-color: #555;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 10px 10px;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -60px;
  opacity: 0;
  transition: opacity 0.3s;
}

.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #555 transparent transparent transparent;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

table {
    table-layout: auto;
    width: 100%;
    border-collapse: collapse;
}

tr:nth-child(even) {background: #DDDD}

/* table, th, td */
/* { */
/*     border: none; */
/* } */
