*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#canvas1{
    border: 3px solid rgb(215, 215, 215);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    max-width: 95%;
    max-height: 95%;
    background-size: cover;
    background-color: rgb(246, 252, 255);
}

.button{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.rangeslider{
width: 50%;
}
.myslider {
    background: #FCF3CF  ;
    width: 50%;
    height: 20px;
    opacity: 2;
   }