.control_btn{
    display: inline-block;
    width: 140px;
    height: 10%;
    margin-left:12px;
    margin-top:10px;
    margin-top: 20px;
    border-radius: 12px;
    font-size: 15px;
}
.control_btn:hover{
    background: #b3d9ff;
    cursor: pointer;
}

#myCanvas{
    display: inline-block;
    position: absolute;
    left: 0;
    top: 0;

}
.control_gp{
    display: inline-block;
    position: absolute;
    background: white;
    opacity: .7;
    left: 30px;
    top: 10px;
    min-height: 60%;
    width: 360px;
    z-index: 1;
    border-radius: 15px;
}

#left_control{
    display: inline-block;
    position: absolute;
    background: white;
    opacity: .7;
    left: 30px;
    top: 10px;
    min-height: 60%;
    width: 360px;
    z-index: 1;
    border-radius: 15px;
}

#progressbar{
    width: 200px;
    height: 20px;
    background: #ffffff;
    border: 2px solid #000;
    position: absolute;
    left: 40%;
    top: 50%;
    z-index: 1;
}

.progress{
    width: 0px;
    height: 20px;
    background: red;
    border: none;
    z-index: 1;
}