style.css

      .login-page {
        width: 360px;
        padding: 8% 0 0;
        margin: auto;
      }
      .form {
        position: relative;
        z-index: 1;
        background: #FFFFFF;
        max-width: 360px;
        margin: 0 auto 100px;
        padding: 45px;
        text-align: center;
        box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.2), 0 5px 5px 0 rgba(0, 0, 0, 0.24);
      }
      .form input {
        font-family: "Roboto", sans-serif;
        outline: 0;
        background: #f2f2f2;
        width: 100%;
        border: 0;
        margin: 0 0 15px;
        padding: 15px;
        box-sizing: border-box;
        font-size: 14px;
      }
      .form button {
        font-family: "Roboto", sans-serif;
        text-transform: uppercase;
        outline: 0;
        background: #4CAF50;
        width: 100%;
        border: 0;
        padding: 15px;
        color: #FFFFFF;
        font-size: 14px;
        -webkit-transition: all 0.3 ease;
        transition: all 0.3 ease;
        cursor: pointer;
      }
      .form button:hover,.form button:active,.form button:focus {
        background: #43A047;
      }
      .form .message {
        margin: 15px 0 0;
        color: #b3b3b3;
        font-size: 12px;
      }
      .form .message a {
        color: #4CAF50;
        text-decoration: none;
      }
      .form .register-form {
        display: none;
      }
      body {
        background: #76b852; /* fallback for old browsers */
        background: -webkit-linear-gradient(right, #76b852, #8DC26F);
        background: -moz-linear-gradient(right, #76b852, #8DC26F);
        background: -o-linear-gradient(right, #76b852, #8DC26F);
        background: linear-gradient(to left, #76b852, #8DC26F);
        font-family: "Roboto", sans-serif;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale; 
      }