.box {
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
   }

   .line {
      border: none;
      border-top: 2px solid #ff0000;
      margin: 14px auto 20px;
      max-width: 560px;
    }

   .title {
      text-align: center;
      color: #0000ff;
      font-size: 2rem;
      font-weight: bold;
      margin-top: 10px;
    }

    @media (max-width: 600px) {
      .title {
        font-size: 1.6rem;
      }
      .box {
        padding: 14px;
      }
    }