* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  
  .container {
    width: 400px;
  }
  
  .card {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 5px;
    box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1);
  }
  
  h2 {
    text-align: center;
    margin-bottom: 20px;
  }
  
  .form-group {
    margin-bottom: 15px;
  }
  
  label {
    display: block;
    margin-bottom: 5px;
  }
  
  input[type="email"],
  input[type="password"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 3px;
  }
  
  input[type="submit"] {
    width: 100%;
    padding: 10px;
    background-color: #37b182;
    color: #ffffff;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  input[type="submit"]:hover {
    background-color: #37b182;
  }
  
  p {
    text-align: center;
    margin-top: 15px;
  }
  
  a {
    color: #37b182;
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  nav {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.button {
    padding: 10px 15px;
    background-color: #37b182;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

back {
  position: fixed;
  top: 20px;
  left: 20px;
}