@media only screen and (min-width: 1900px) and (max-width: 2157px) {
    /*for PC*/
        .box {
            margin-left: 15%;
            margin-right: 15%;
            margin-bottom: 0%;
        }

        .imgdanceandblack {
            margin-left: 15%;
            margin-right: 15%;
            margin-bottom: 0%;
        }

        .header {
            font-size: 320%;
            margin-bottom: 5%;
        }
        
        b {
            font-size: 300%;
        }
        
        .text1 {
            font-size: 180%;
        }
        
        .yt {
            height: 400px;
            width: 55%;
        }
        
        
        .memberL {
           display: none;
        }
        
        .member {
            width: 40%;
            float: right;
        }
        
        .bodyleft {
            font-size: 180%;
            padding-top: 3%;
            max-width: 55%;
        }
        
        .body2 {
            font-size: 180%;
            padding-top: 5%;
            float: left;
        }
        
        
        .irene {
            padding-top: 5%;
            width: 49%;
            float: right;
            
        }
        
        .butterfly {
            padding-top: 5%;
            width: 49%;
            float: left;
        }
        
        .part2 {
            font-size: 180%;
            padding-top: 5%;
            float: left;
        }
        
        .part3 {
            font-size: 180%;
            padding-top: 5%;
            float: left;
            padding-bottom: 5%;
        }

        .part4 {
            font-size: 180%;
            background-color: aliceblue;
            text-align: center;
            margin-left: 15%;
            margin-right: 15%;
        }


        .dancetext {
            font-size: 150%;
            padding-top: 2%;
            max-width: 100%;
            float: left;
        }

        .wendyset {
            padding-top: 5%;
            width: 49%;
            float: left;
        }

        .wendyset p {
            text-align: center;
            font-style: italic;
            font-size: 130%;
            text-indent: 0;
            padding-top: 2%;
          }

          .yeriset {
            padding-top: 5%;
            width: 49%;
            float: right;
        }

        .yeriset p {
            text-align: center;
            font-style: italic;
            font-size: 130%;
            text-indent: 0;
            padding-top: 2%;
          }
        
          .imgdance {
            padding-top: 3%;
            width: 35%;
            float: left;
        }

        .imgdance p {
            text-align: center;
            font-style: italic;
            font-size: 130%;
            text-indent: 0;
            padding-top: 2%;
          }
        
        .black {
            padding-top: 3.3%;
            width: 21.5%;
            float: right;
            padding-right: 2%;
        }

        .black p {
            text-align: center;
            font-style: italic;
            font-size: 130%;
            text-indent: 0;
            padding-top: 3.2%;
          }

          .contact {
            font-size: 100%;
            float: left;
            margin-top: 5%;            
        }

        .buttoncontact {   
            float: right;
            display: none;
        }

        .buttoncontact:hover {
            display: block;
        }

        .contactall {
            position: fixed;
            bottom: 0;
            margin: 0.7%;
            
        }

        .contactall :hover + .buttoncontact {
            display: block;
        }
        

    
    }