The following is my code:
以下是我的代码：
<svg xmlns:xlink="https://www.w3.org/1999/xlink" xmlns="https://www.w3.org/2000/svg" width="1200px" height="1500px" viewBox="0 0 400 500" id="RoomsSVG">
<svg id="Room1" width="1200px" height="500px" x="0px" y="0px">
<rect id="Room1Rect" width="100%" height="100%" fill="red" stroke="black" stroke-width="5px" />
</svg>
<svg id="Room2" width="1200px" height="500px" x="0px" y="500px">
<rect id="Room2Rect" width="100%" height="100%" fill="green" stroke="black" stroke-width="5px" />
</svg>
<svg id="Room3" width="1200px" height="500px" x="0px" y="1000px">
<rect id="Room3Rect" width="100%" height="100%" fill="blue" stroke="black" stroke-width="5px" />
</svg>
</svg>
<svg xml
