body{margin:0;font:16px sans-serif}.container{border:3px dashed #aaa;border-radius:10px;flex-direction:column;max-width:600px;min-height:400px;margin:20px auto auto;padding:20px;display:flex;position:relative}.container_drag{border-color:#444}.label{justify-content:center;align-items:center;width:100%;height:100%;font-size:120%;display:flex;position:absolute;top:0;left:0}.buttons{margin-top:auto;display:flex}.save{color:#fff;cursor:pointer;background:#5ec25e;border:none;border-radius:3px;flex:auto;margin-top:10px;padding:10px;font-size:120%;display:none}.save:first-child{margin-right:10px}.save:hover{background:#62cf62}.container_with-data .label{display:none}.container_with-data .save{display:block}