body{
    background-color: #b6b6b6;
    margin:0;
}
.head_panel{
    width:100%;
    min-height: 100px;
    background-color: rgba(50, 18, 80, 0.73);
    padding-top: 5px;
}
.load_pdf{
    width:100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    margin: 20px 0;
}
.load_pdf button{
    background-color: #3b7010;
    color:#fff;
    border:none;
    padding:5px 15px;
}
.canvas_holder{
    width:100%;
    min-height:450px;
    background-color: white;
    /*display: flex;*/
    justify-content: center;
    align-items: center;
    flex-direction: column;
    /*margin: 20px 0;*/
}
.panel ul{
    list-style: none;
}
.panel ul li{
    float:left;
    margin-left:10px;
}