.frame {
    width: 90%;
    margin: 40px auto;
    text-align: center;
  }
  .custom-btn {
    width: 100%;
    height: 40px;
    color: #fff;
    border-radius: 5px;
    /*padding: 10px 25px;*/
    font-weight: 500;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    display: inline-block;
    box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
        7px 7px 20px 0px rgba(0,0,0,.1),
        4px 4px 5px 0px rgba(0,0,0,.1);
    outline: none;
  }

  .btn-12{
    background: #f10f22;
    background: linear-gradient(0deg, #f10f22 0%, #f39c12 100%);
    color: #FFF;
    overflow: hidden;
    font-weight: 600;
    margin-top: 10px;
    padding-top: 10px;
    justify-content: center;
  }

  .btn-12:hover{
    text-decoration: none;
    background: linear-gradient(0deg, #f39c12 0%, #f10f22 0%);
    color: #FFF;
    cursor: pointer;
  }
  
  /* 11 */
  .btn-11 {
      border: none;
      background: rgb(251, 33, 117);
      background: linear-gradient(0deg, #1c41db 0%, #004f9f 100%);
      color: #ffffff;
      overflow: hidden;
      font-weight: 600;
      margin-top: 10px;
  }
  .btn-11:hover {
      text-decoration: none;
      background: linear-gradient(0deg, #004f9f 0%, #1c41db 0%);
      color: #ffffff;
      cursor: pointer;
  }
  .btn-11:before {
      position: absolute;
      content: '';
      display: inline-block;
      top: -180px;
      left: 0;
      width: 30px;
      height: 100%;
      background-color: #fff;
      animation: shiny-btn1 3s ease-in-out infinite;
  }
  /*.btn-11:hover{
    opacity: .1;
  }*/
  .btn-11:active{
    box-shadow:  4px 4px 6px 0 rgba(255,255,255,.3),
                -4px -4px 6px 0 rgba(116, 125, 136, .2), 
      inset -4px -4px 6px 0 rgba(255,255,255,.2),
      inset 4px 4px 6px 0 rgba(0, 0, 0, .2);
  }
  
  
  @-webkit-keyframes shiny-btn1 {
      0% { -webkit-transform: scale(0) rotate(45deg); opacity: 0; }
      80% { -webkit-transform: scale(0) rotate(45deg); opacity: 0.5; }
      81% { -webkit-transform: scale(4) rotate(45deg); opacity: 1; }
      100% { -webkit-transform: scale(50) rotate(45deg); opacity: 0; }
  }