th.PI / 180;

        let rightdiv = document.createElement('div');
        rightdiv.className = 'right';
        let right = new THREE.CSS3DObject(rightdiv);
        right.position.x = 50;
        right.position.z = -100;
        right.rotation.x = -90 * Math.PI / 180;
        right.rotation.y = 90 * Math.PI / 180;

        let leftdiv = document.createElement('div');
        leftdiv.className = 'left';
        let left = new THREE.CSS3DObject(leftdiv);
        left.position.x = -50;
        left.position.