.led-green {
  margin: 0 auto;
  width: 20px;
  height: 20px;
  background-color: #ABFF00;
  border-radius: 50%;
  box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #304701 0 -1px 9px, #89FF00 0 2px 12px;
}

.led-red {
  margin: 0 auto;
  width: 20px;
  height: 20px;
  background-color: #F00;
  border-radius: 50%;
  box-shadow: rgba(0, 0, 0, 0.2) 0 -1px 7px 1px, inset #441313 0 -1px 9px, rgba(255, 0, 0, 0.5) 0 2px 12px;
  -webkit-animation: blinkRed 0.5s infinite;
  -moz-animation: blinkRed 0.5s infinite;
  -ms-animation: blinkRed 0.5s infinite;
  -o-animation: blinkRed 0.5s infinite;
  animation: blinkRed 0.5s infinite;
}

#table_pending_devices table {
  table-layout: fixed;
  margin: 1rem auto;
  width: 90%;
  box-shadow: 0 0 2px rgba(0,0,0,.4);
  border-collapse: collapse;
}
#table_pending_devices thead {

}
#table_pending_devices th {
  background: #2c3e50;
  color: #fff;
  font-weight: 400;
  padding: .7rem 0;
  border: 3px solid #fff;
  font-size: 1rem;
  font-variant: small-caps;
  width: 32%;
}
#table_pending_devices th:last-child {width: 8%;}

#table_pending_devices td {
  padding: .5rem 1rem;
  border-right: 1px solid rgba(0,0,0,.05);
}
#table_pending_devices td:last-child {
  border-right: 0 none;
  text-align: center;
}
@media only screen and (max-width:600px) {
  #table_pending_devices table{
    width: 98%;
  }
  #table_pending_devices thead {display: none;}
  #table_pending_devices tr {border-bottom: 2px solid rgba(17,149,178,.35);}
  #table_pending_devices tr:last-child {border-bottom: 0 none;}
  #table_pending_devices td {
    display: block;
    padding: .3rem .5rem;
  }
  #table_pending_devices td:before {
    content: attr(data-head);
    display: inline-block;
    width: auto;;
    min-width: 40%;
    font-weight: 900;
    padding-right: 1rem;
    font-variant: small-caps;
  }
  #table_pending_devices td:last-child {text-align: left;}

}

#table_pending_devices tbody {
  display: contents;
}

.main-table
{
  text-align: center;
}