Bolded the TL;DR in checkbox custom

blog-posts/checkbox-custom-styles.md

@@ -2,7 +2,7 @@ title: Customize an HTML Checkbox

                                
                                
                                
                            
                                
                                    
                                        
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                                            date: 2022 Feb 19
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
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                                            updated: 2024 Feb 2
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
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                                        5 -
                                        TL;DR: `appearance: none;`.
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        5 +
                                        **TL;DR**: `appearance: none;`.
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
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                                            7  
                                            Checkboxes are hard to style. But when you're making a website, they may look ugly.
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
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