/**app.wxss**/ page { height: 100%; --maincolor: #45A6B5; } .container { height: 100%; width: 100%; box-sizing: border-box; } .ittflex { display: flex; justify-content: center; align-items: center; } .ittflex-jcs { display: flex; justify-content: flex-start; align-items: center; }