.canvas_div{

  width: 60%;
  height: 100%;
  display: inline-block;
  float:left;
  position: relative;

}

html,body{

  padding: 0px;
  margin: 0px;
  font-family: Arial !important;

}

.item{

  width: calc(100% - 40px);
  padding: 20px;
  background-color: white;
  border-bottom: 1px solid #cccccc;
  cursor: pointer;

}

.cover{

  background-color: rgba(0, 0, 0, 0.5);
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: none;

}

.popup{

  background-color: #fafafa;
  position: absolute;
  top: 40%;
  left: calc(50% - 200px);
  width: 400px;
  border: 1px solid black;
  padding: 5px;
  display: none;
  max-height: 400px;
  overflow-y: scroll;

}

.options_div{

  width: calc(40% - 20px);
  height: calc(100% - 20px);
  padding: 10px;
  background-color: #aaaaee;
  display: inline-block;
  position: relative;

}

.main_input{

  width: calc(100% - 20px);
  padding: 10px;
  border-radius: 5px;
  margin-bottom: 10px;
  border: 1px solid #cccccc;

}
.sub_div{

  margin-bottom: 10px;
  border: 2px solid #666666;
  border-radius: 2px;
  width: 100px;
  height: 100px;

}

.main_button{

  padding: 10px;
  background-color: #f7f7f7;
  border: 1px solid #bbbbbb;
  border-radius: 5px;
  cursor: pointer;

}