ball-applet/pages/stuAdmin/study/list.less

ec-canvas {
    width: 100%;
    height: 100%;
}

.container {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
}