/*========= waveを描画するエリア設定 ===============*/


          .wave{
            position: relative;
            height: 560px;
          }
    
          .wave:nth-child(1){
            background:rgb(248, 246, 100);
          }
          
          .wave canvas{
              position: absolute;
              bottom: 0;
            left:0;
              width: 100%;
          }