实现效果：
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><style>#form div{display: flex;height:30px;align-items: flex-start;}#form div label{flex:0 0 100px;text-align: right;}</style></head><body><form action=""><div id="form"><div><label>姓名：</label><input type="text"></div><div><label>请输入密码：</label><input type="text"></div></div></form></body></html>
