ps：当你想让Label的文字靠后，但无法修改 Label 的内边距，你可以 修改 Label 的 段落样式 达到想要的效果
UILabel * label = [[UILabel alloc]init];
// label.text = @"推荐用户";
label.font = [UIFont jk_systemFontOfPxSize:28];
label.textColor = [UIColor colorWithHexString:@"#333333"];
label.backgroundColor = [UIColor whiteColor];
NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
paraStyle.alignment = NSTextAlignmentLeft; //对齐
paraStyle.headIndent = 0.0f;//行首缩进
//参数：（字体大小17号字乘以2，34f即首行空出两个字符）
CGFloat emptylen = label.font.pointSize * 2;
paraStyle.firstLineHeadIndent = emptylen;//首行缩进
paraStyle.tailIndent = 0.0f;//行尾缩进
paraStyle.lineSpacing = 2.0f;//行间距
NSAttributedString *attrText = [[NSAttributedString alloc] initWithString:@"推荐用户" attributes:@{NSParagraphStyleAttributeName:paraStyle}];
label.attributedText = attrText;