#div_eraser_img {
    position: relative; 
    width: 500px;
    overflow: hidden;
}

#div_eraser_img #div_content_ei {
    display: none;
    position: absolute;
    left: 0px;
    top: 0px;
    width: 500px;
    padding: 50px 50px 0px 50px;
}
#div_eraser_img #div_content_ei #div_img_ei {
    width: 400px; 
    max-height: 50vh;
    margin: 0px auto 30px auto;
    /*border: 15px solid WhiteSmoke;*/
    border-radius: 10px;
    overflow: hidden;
}
#div_eraser_img #div_content_ei #div_img_ei>img {
    display: block;
    width: 400px;
}
#div_eraser_img #div_content_ei #div_text_ei {
    width: 400px; 
    margin: 30px auto;
    color: black;
    white-space: pre-wrap;
    font-size: 18px;
}
#div_eraser_img #div_content_ei #div_btn_ei {
    display: none;
    width: 400px;
    font-size: 18px;
    font-weight: 100;
    color: gray;
    text-align: right;
    animation: fade_in_out 2s linear infinite alternate;
    -webkit-animation: fade_in_out 2s linear infinite alternate;
}



#div_eraser_img #img_canvas_ei { 
    position: absolute;
    left: 0px;
    top: 0px;
    width: 500px;
}
#div_eraser_img #canvas_ei {
    position: absolute;
    left: 0px;
    top: 0px;
}



#div_eraser_img #div_tips_ei {
    position: absolute; 
    left: 50%;
    top: 100px; 
    width: 400px;
    padding: 10px 20px;
    background-color: rgba(250,250,250,.7);
    border-radius: 15px;
    color: black; 
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    /*opacity: 0;*/
    transform: translateX(-50%);
    /*-webkit-animation: fade_in_out 2s linear infinite alternate;*/
}
@keyframes fade_in_out {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}



#div_eraser_img #img_finger_ei {
    position: absolute; 
    left: 200px; 
    top: 240px; 
    width: 24px;
    opacity: 0;
}