html,body{
  width: 99%;
  height: 99%;
  background-color: #D5EAFF;
  padding: 0%;
  margin: auto;
  text-align: center;
display: flex;
justify-content: center;
align-items: center;
}
#app{
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}
#divHead,#left,#main,.shelf{
  box-shadow: 0 2px 4px rgba(0, 0, 0, .12), 0 0 6px rgba(0, 0, 0, .04);
}
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button { 
    -webkit-appearance: none; 
}
*{
  text-align: center;
}
#mains{
  height: 100%;
	width: 100%;
  padding: 0;
  margin: 0;
}
*{
	padding: 0%;
	margin: 0%;
}
.imgCenter{
  max-width: 100%;
  max-height: 100%;
  position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	margin: auto;
}
.el-dialog__body{
  height: 40vh;
   overflow: auto;
}