estilo_registro.css

* {
 
    box-sizing: border-box;
  }
  
  *:focus {
    outline: none;
  }
  
  body {
    background-image: url("https://w.wallhaven.cc/full/6d/wallhaven-6dmgzl.jpg");
    font-family: Arial;
    background-color: #181818;
    padding: 50px;
  }
  
  .login {
    margin: 20px auto;
    width: 300px;
  }
  
  .login-screen {
    background-color: #FFF;
    padding: 20px;
    border-radius: 5px
  }
  
  .app-title {
    text-align: center;
    color: #777;
  }
  
  .login-form {
    text-align: center;
  }
  
  .control-group {
    margin-bottom: 10px;
  }
  
  input {
    text-align: center;
    background-color: #ECF0F1;
    border: 2px solid transparent;
    border-radius: 3px;
    font-size: 16px;
    font-weight: 200;
    padding: 10px 0;
    width: 250px;
    transition: border .5s;
  }
  
  input:focus {
    border: 2px solid #3498DB;
    box-shadow: none;
  }
  
  .btn {
    border: 2px solid transparent;
    background: #59aae0;
    color: #ffffff;
    font-size: 16px;
    line-height: 25px;
    text-align: center;
    padding: 10px 0;
    text-decoration: none;
    text-shadow: none;
    border-radius: 3px;
    box-shadow: none;
    transition: 0.25s;
    display: block;
    width: 250px;
    margin: 0 auto;
  }
  
  .btn:hover {
    background-color: #2980B9;
  }
  
  .login-link {
    font-size: 12px;
    color: #444;
    display: block;
    margin-top: 12px;
  }