css 圆形渐变框

.user_avatar {
    width: 140rpx;
    height: 140rpx;
    background-image: linear-gradient(#aaf0d8, #2ED);
    border-radius: 50%;
    padding: 6rpx;
    box-sizing: border-box;
}

.user_avatar image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}