#cont {
  width: 400px;
  margin-left: auto;
  margin-right: auto;  
  background-color: #fff;
}

#logo{
  height: 160px;
  margin-left: auto;
  margin-right: auto;
  display: block;
  margin-top: 17px;
  margin-bottom: 32px;
}

.form-group{
  padding: 20px;
  padding-top: 2px;
  padding-bottom: 2px;
}

#titulos a{
  margin: auto;
}

#em, #em2{
  margin-top: 20px
}

body {
    padding-top: 40px;
    background-image: linear-gradient(to bottom, rgba(0,0,0,0.7) 0%,rgba(0,0,0,0.0) 100%) , url("../img/huella.jpg");
    background-repeat: no-repeat !important;
    background-size: cover;
}
.panel-login {
  border-color: #ccc;
  -webkit-box-shadow: 0px 2px 3px 0px rgba(0,0,0,0.2);
  -moz-box-shadow: 0px 2px 3px 0px rgba(0,0,0,0.2);
  box-shadow: 0px 2px 3px 0px rgba(0,0,0,0.2);
}
.panel-login>.panel-heading {
  color: #00415d;
  background-color: #fff;
  border-color: #fff;
  text-align:center;
}
.panel-login>.panel-heading a{
  text-decoration: none;
  color: #666;
  font-weight: bold;
  font-size: 15px;
  -webkit-transition: all 0.1s linear;
  -moz-transition: all 0.1s linear;
  transition: all 0.1s linear;
}
.panel-login>.panel-heading a.active{
  color: #029f5b;
  font-size: 22px;
}
.panel-login>.panel-heading hr{
  margin-top: 10px;
  margin-bottom: 0px;
  clear: both;
  border: 0;
  height: 1px;
  background-image: -webkit-linear-gradient(left,rgba(0, 0, 0, 0),rgba(0, 0, 0, 0.15),rgba(0, 0, 0, 0));
  background-image: -moz-linear-gradient(left,rgba(0,0,0,0),rgba(0,0,0,0.15),rgba(0,0,0,0));
  background-image: -ms-linear-gradient(left,rgba(0,0,0,0),rgba(0,0,0,0.15),rgba(0,0,0,0));
  background-image: -o-linear-gradient(left,rgba(0,0,0,0),rgba(0,0,0,0.15),rgba(0,0,0,0));
}
.panel-login input[type="text"],.panel-login input[type="email"],.panel-login input[type="password"] {
  height: 45px;
  border: 1px solid #ddd;
  font-size: 16px;
  -webkit-transition: all 0.1s linear;
  -moz-transition: all 0.1s linear;
  transition: all 0.1s linear;
}
.panel-login input:hover,
.panel-login input:focus {
  outline:none;
  -webkit-box-shadow: none;
  -moz-box-shadow: none;
  box-shadow: none;
  border-color: #ccc;
}

@media (max-width: 850px) {
  body{
    padding-top: 60px;
    background-size: 1000px;
  }
  #cont{
    width: 280px;
  }
  #logo{
    height: 100px;
  }
}