button {
    cursor: pointer;
    /*padding: 10px 12px;*/
    font-size: 17px;
    width: 150px;
    height: 50px;
    margin-bottom: 20px;
    margin-top: 20px;
    background-color: transparent;
  }

#outside-container-circle {
    border: 2px solid #227F71;
    color: #227F71;
    border-radius: 0px;
    position: relative;
    overflow: hidden;
    display: block;
    z-index: 2;
    font-weight: bold;
    }
  
  #outside-container-circle span {
    transition: color 1s ease;
  }
  
  #outside-container-circle:before {
    content: "";
    display: block;
    position: absolute;
    top: 100%;
    left: 100%;
    width: 200px;
    height: 100px;
    background-color: #227F71;
    border-radius: 50%;
    transition: all 0.3s ease;
  }
  
  #outside-container-circle:hover:before {
    top: -30px;
    left: -30px;
  }
  
  #outside-container-circle:hover span {
    color: #fff;
    z-index: 99999;
    position: relative;
  }

  .btn-white {
    border: 2px solid #fff;
    color: #fff;
    margin-top: 50px;
    transition: all .3s ease;
    z-index: 2;
  }

  .btn-white:hover {
    background-color: #227F71;
    color: #fff;
    border-color: #227F71;
  }

  @media screen and (max-width: 769px) {
    button {
        width: 200px;
        height: 60px;
        font-size: 20px;
      }

    .btn-white {
        width: 50%;
        height: 70px;
        font-size: 26px;
    }
    
      .btn-white:hover {
        background-color: #fff;
        color: #000;
      }

  }

  @media screen and (max-width: 568px) {
    button {
        width: 200px;
        height: 60px;
        font-size: 20px;
      }

    .btn-white {
        width: 50%;
        height: 50px;
        font-size: 22px;
    }
    
      .btn-white:hover {
        background-color: #fff;
        color: #000;
      }

  }