@media screen and (max-width:640px) {
    body 
    {
        /*font-size: 8px !important;*/
        background-color: #fff !important;
    }
    .panel-body
    {
      border-color: #fff !important;
    }
    .panel .panel-default
    {
      border-color: #fff !important;
    }
    .panel-default
    {
      border-color: #fff !important;
    }
}

body {
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #eee;
  font-family: verdana;
  color: #555;
}

.form-signin {
  max-width: 330px;
  padding: 15px;
  margin: 0 auto;
  color: #555;
}
.form-signin .form-signin-heading,
.form-signin .checkbox {
  margin-bottom: 10px;
}
.form-signin .checkbox {
  font-weight: normal;
}
.form-signin .form-control {
  position: relative;
  height: auto;
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
  padding: 10px;
  font-size: 16px;
}
.form-signin .form-control:focus {
  z-index: 2;
}
.form-signin input[type="email"] {
  margin-bottom: -1px;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}
.form-signin input[type="password"] {
  margin-bottom: 10px;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.first-row,
.second-row,
.third-row,
.fourth-row,
.fifth-row {
  margin-bottom: 3px;
}
form table{
  border-collapse: unset;
  border-spacing: revert;
  font-size: 30px;
  margin:10px auto;
}
.table_teclado tr td
{
	background: #828282;
	color: #FFF;
	padding: .2em .5em;
	cursor: pointer;
	border-radius: 3px;
	font-family: sans-serif;
	border: 1px solid #757575;
  /* max-width: 10px; */
	position: relative;
}

.table_teclado tr td:hover
{
	background: #525252;
}

.btn_delete
{
	position: absolute;
	left: .1em;
	bottom: .1em;
	width: 19px;
}