.wrapper {
    height: 40px;;
    background-color: #f5f6fa;
  }
    
  .wave-btn {
    color: #fff;
    text-decoration: none;
    border: 3px solid #fff;
    padding: 5px 30px;
    font-size: 22px;
    font-weight: 600;
    font-family: "Noto Sans";
    line-height: 52px;
    border-radius: 10px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    overflow: hidden;
    transition: all 1s;
  }
    
  .wave-btn:before {
    content: "";
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 130px;
    background-color: #0097e6;
    top: 30px;
    left: 50%;
    transform: translate(-50%);
    animation: wave 5s infinite linear;
    transition: all 1s;
  }
    
    
  .wave-btn:hover:before {
    top: 15px;
  }
    
  @keyframes wave {
    0% {
                 transform: translate(-50%) rotate(-180deg);
        
    }
      
      
    100% {
              transform: translate(-50%) rotate(360deg);
    }
  }