.container {
    display: flex;
    height: 600px;
    /* Full height minus header */
}

.left{
        width: 2%;
        padding: 10px;
    }
.right {
    background-color: #f9f9f9;
    width: 4%;
    padding: 10px;
}
.deomTitle {
    width: 100%;
    height: 120px;
}
.greenFrame {
    position: absolute;
    left:-1%;
    top:-1%; 
}
#greenFrameImg {
    
    width: 105%;
    height: 600px;
}
.middle {
    position: relative;
    flex: 1;
    height: 594px;
    background-color: #f9f9f9;
   
}

/* Optional: Make it responsive */
@media (max-width: 768px) {

    .left,
    .right {
        display: none;
    }

    .middle {
       
        background: #fff;
        flex: 1;
    }
}

#canvas {
    padding-top: 30px;
    z-index: 11;
    display: block;
    width: 100%;
    height: auto
}

#banner {
    position: absolute;
    top: 11px;
    width: 100%;
    text-align: center;
    font-size: 54px;
    font-weight: 700;
    color: #0050a4;
    pointer-events: none
}

#startBtn {
    position: absolute;
    z-index: 10;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    padding: 18px 36px;
    font-size: 24px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    background: #4ca9ff;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, .25)
}

#startBtn:hover {
    background: #3a8ae0
}