body {
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #eee;
  overflow: auto;
}

.form-signin {
  max-width: 330px;
  padding: 15px;
  margin: 0 auto;
}
.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="text"] {
  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;
}

html {
    overflow: hidden;
    background: url(images/captiveportal-imagen_central.jpg) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;

  }
  body {
      background-color: transparent !important;
      overflow: hidden;
    }

    .register {
          background: -webkit-linear-gradient(left, #12131291, #089406c4);
          margin-top: 3%;
          padding: 3%;
        }

  .register-left {
    text-align: center;
    color: #fff;
    margin-top: 4%;
    letter-spacing: 1px;
  }

  .register-left input {
    border: none;
    border-radius: 1.5rem;
    padding: 2%;
    width: 60%;
    background: #f8f9fa;
    font-weight: bold;
    color: #383d41;
    margin-top: 30%;
    margin-bottom: 3%;
    cursor: pointer;
  }

  .register-right {
    background: #f8f9fa;
    border-top-left-radius: 20% 50%;
    border-bottom-left-radius: 20% 50%;
  }

  .register-left img {
    margin-top: 15%;
    margin-bottom: 5%;
    width: 100%;
    -webkit-animation: mover 2s infinite alternate;
    animation: mover 1s infinite alternate;
  }

  @-webkit-keyframes mover {
    0% {
      transform: translateY(0);
    }
    100% {
      transform: translateY(-20px);
    }
  }

  @keyframes mover {
    0% {
      transform: translateY(0);
    }
    100% {
      transform: translateY(-20px);
    }
  }

  .register-left p {
    font-weight: lighter;
    padding: 12%;
    margin-top: -9%;
  }

  .register .register-form {
    padding: 10%;
    margin-top: 10%;
  }

  .btnRegister {
    float: right;
    margin-top: 10%;
    border: none;
    border-radius: 1.5rem;
    padding: 2%;
    background: green;
    color: #fff;
    font-weight: 600;
    width: 50%;
    cursor: pointer;
  }

  .register .nav-tabs {
    margin-top: 3%;
    border: none;
    background: #244c03;
    border-radius: 1.5rem;
    width: 40%;
    float: right;
  }

  .register .nav-tabs .nav-link {
    padding: 1%;
    height: 34px;
    font-weight: 600;
    color: #fff;
    border-top-right-radius: 1.5rem;
    border-bottom-right-radius: 1.5rem;
  }

  .register .nav-tabs .nav-link:hover {
    border: none;
  }

  .register .nav-tabs .nav-link.active {
    width: 100%;
    color: #244c03;
    border: 2px solid #244c03;
    border-top-left-radius: 1.5rem;
    border-bottom-left-radius: 1.5rem;
  }

  .register-heading {
    text-shadow: rgb(0, 0, 0) 0px 2px 3px;
    color: white;
    text-align: center;
    margin-left: 10px;
    margin-top: 10%;
    margin-bottom: -15%;
    border-top-left-radius: 35px;
    background: -webkit-linear-gradient(left, #121312, #28a745) !important;
  }

  .tab-content {
    padding-top: 1em;
  }

  .boton_entrar {
    margin-left: auto !important;
    margin-right: auto !important;
  }

  .circle_button {
    box-shadow: 2px 4px 0 2px rgba(0, 0, 0, 0.1);
    border: .5em solid #c7d400;
    font-size: 1em;
    line-height: 1.1em;
    color: #ffffff;
    background-color: #76be4e;
    margin: auto;
    border-radius: 50%;
    height: 7em;
    width: 7em;
    position: relative;
  }

  .circle_button:hover {
    color: #ffffff;
    background-color:green;
    text-decoration: none;
    border-color: #c7d400;

  }

  .circle_button:visited {
    color: #ffffff;
    background-color: #c7d400;
    text-decoration: none;

  }

  .circle-link-greater-than {
    font-size: 1em;
  }

  @media screen and (max-width:990px) {
    .register .nav-tabs {
      width: 90%;
    }

  }

  @media screen and (max-width:768px) {
.register-left {
  margin-top: 0px;
}
.register-left p {
  font-weight: lighter;
  padding: 0px;
  margin-top: 0px;
}
.register-left h3 {
  margin-top: 0px;
}
.register-heading {
  font-size: 21px;
  margin-top: 4em
}
.boton_entrar {
  margin-left: auto;
  margin-right: auto;
  width: 0px;
  padding-right: 8em;
}
.register-left img {
  margin-top: 5%;
  margin-bottom: 0%;
  width: 100%;
}
}

@media screen and (max-width: 440px) {
html {
    overflow: auto;
}
body {
  overflow: auto;
}
.register-left {
  margin-top: 0px;
  padding-left: 3em;
}
.register-right{
  border-top-left-radius: 0% 50%;
  border-bottom-left-radius: 0% 50%;
  background: #f8f9fab5;
}
}