fix: 修复bus

zhangzengfei

2020-08-07 cc7f28137c5fbd698b02817259f2af1311bbb1b2

 src/components/canvas/index.vue

@@ -473,6 +473,11 @@
};
</script>
<style lang="scss" scoped>
canvas{
  position: absolute;
  top: 0;
  left: 0;
}
.s-cavas {
  width: 576px;
  height: 324px;