vue项目中使用容器el-container无法铺满屏幕

step 1. 让body， html铺满整个屏幕

body,
#app{
  height: 100vh;
  margin: 0;
  padding: 0;
  width:100vw;
}

step 2. 让container容器铺满屏幕

.el-container {
    padding: 0;
    margin: 0;
    height: 100vh;
    width:100vw;
}