body { max-width:550px;   margin-left:auto;  margin-right:auto; font-family: helvetica;}#usuarios {  font-family: Arial, Helvetica, sans-serif;  border-collapse: collapse;  width: 100%;}#usuarios td, #usuarios th {  border: 1px solid #ddd;  padding: 2px;  font-size: 14px;}#usuarios tr:nth-child(even){  background-color: #f2f2f2;}#usuarios tr:hover {  background-color: #ddd;}#usuarios th {  padding-top: 2px;  padding-bottom: 2px;  text-align: center;  background-color: #C0C0C0;  color: black;  font-size: 14px;}table#lstdis {  background-color:#FAFAFA;  color:#C0C0C0;  text-align: left;}#winusuarios {  padding: 5px;   border: 1px solid black;   background-color:white;  width: 98%;   height: 220px;  overflow: scroll;  border-radius: 10px;}#ventana {  margin-left: auto;  margin-right: auto;  color:#000000;  background: #E0E0E0;  padding: 4px;  border-collapse: separate;  border: 1px solid #aaa;  border-radius: 10px;  -moz-border-radius: 10px;  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);}#ventana td   {  color:#000000;  padding: 2px;  background-color:#E0E0E0;  }#alerta {   width: 100%;  background-color:#FF0000;  color:#FFFFFF;  padding: 4px;  border-collapse: separate;  border: 1px solid orangered;  border-radius: 10px;  -moz-border-radius: 10px;}#normal {   width: 100%;  background-color:whitesmoke;  color:black;  padding: 5px;  border-collapse: separate;  border: 1px solid darkgray;  border-radius: 10px;  -moz-border-radius: 10px;  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);}#redondo{ border-radius: 10px; }#log {  text-align: left;  color:#FFFFFF;   background-color:#000000;   width: 100%; height: 220px;   overflow: scroll;}#mainbg {  background-color:#E0E0E0;  text-align: center;  color:black;  padding: 5px;  border-collapse: separate;  border: 1px solid darkgray;  border-radius: 10px;  -moz-border-radius: 10px;  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);}#mainbgfoot {  background-color:#E0E0E0;  text-align: center;  color:black;  padding: 5px;  border-collapse: separate;  border: 1px solid darkgray;  border-radius: 10px;  -moz-border-radius: 10px;}#msgok {  text-align: center;  background-color:#80FF80;  color:#000000;  border-radius: 10px;  -moz-border-radius: 10px;  }#msgerr {  text-align: center;  background-color:#FF0000;  color:#FFFFFF;  border-radius: 10px;  -moz-border-radius: 10px;} form {  display: inline;}#dropbtn {   font-family:helvetica;  background-color: silver;  width: 150px;  color: black;   padding: 5px;  font-size: 14px;  border: none;  border-radius: 10px;  -moz-border-radius: 10px;}#dropdown {  position: relative;  display: inline-block; }#dropdown-content {  font-family:helvetica;  display: none;   position: absolute;   background-color: #f1f1f1;   min-width: 270px;    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);  z-index: 1;  font-size: 14px;  text-align: left;  border-radius: 10px;  -moz-border-radius: 10px;}#dropdown-content a {  color: black;  padding: 5px 5px;  text-decoration: none;  display: block;  text-align: left;  border-radius: 10px;  -moz-border-radius: 10px;}#dropdown-content a:hover {  background-color: #ccc;}#dropdown:hover #dropdown-content {  display: block;}#dropdown:hover #dropbtn {  background-color: green;  color: lightcyan;}#divgris {  border-radius: 10px;  padding: 10px;  text-align: center;  background-color: lightgray;}#divblanco {  border-radius: 10px;  padding: 10px;  background-color: white;  text-align: center;}pre{  margin: 1px;}