* {
    box-sizing: border-box;
    }
    
    *:focus {
        outline: none;
    }
    body {
    font-family: Arial;
    background-image: linear-gradient(90deg, #b7d454 0, #a5d251 16.67%, #91cf50 33.33%, #7acc50 50%, #60c951 66.67%, #3fc555 83.33%, #00c25a 100%);
    background-size: cover;
    
    padding: 50px;
    }
    .login {
    margin: 20px auto;
    width: 300px;
    
    }
    .login-screen {
    background-color: rgb(255, 255, 255);
    padding: 20px;
    border-radius: 5px;
    box-shadow: 8px 8px 15px #00000056;
    }
    
    .app-title {
    text-align: center;
    
    }
    
    .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 #D3D000;
    box-shadow: none;
    }
    
    .btn {
      border: 2px solid transparent;
      background: #4C9E2F;
      color: #ffffff;
      font-size: 16px;
      line-height: 25px;
      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: #D3D000;
    }
    
    .login-link {
      font-size: 12px;
      color: #444;
      display: block;
        margin-top: 12px;
    }