Snook on Twitter: "My guess is that is inline-block, which will have a gap underneath it (like images do) due to alignment within text boxes. A font-size:0 on container or display:block
Center block or inline-block (single instance per row) elements without wrapper but with padding-like gap - Stack Overflow
inline-block div 간격 0으로 만들기 - Blog by IPADORUSA
5 Ways to Display Div Containers Side By Side
Fixing Gap Between Tab Title and Content in Publishing Pages : Support Center
Menghilangkan Gap Dari Element Dengan Display: Inline-block | Display, Membaca
Inline-block to CSS Grid
How to Make Inline-Block Elements Add Up to 100% Width – UX Engineer
What's the Deal With Display: Inline-Block? | Design Shack
Should You Use Inline-Blocks As A Substitute For Floats? - Vanseo Design
display: inline-block leaves gap with respect to height after div element - Stack Overflow
The strange gap in HTML - DEV
Should You Use Inline-Blocks As A Substitute For Floats? - Vanseo Design
How to use inline-block for layout • iamsteve
The Li element inline-block is arranged horizontally, and an unknown gap appears. | Develop Paper
Why is there an unexplainable gap between these inline-block div elements? - Stack Overflow
Cross-Browser Inline-Block | Mozilla Web Development
MedCSS.docx | Cascading Style Sheets | Html Element
Interview Preparation — CSS Questions-1 | by Nabendu Biswas | Medium
Display | HTML Dog
How to Remove Space between Inline Block Elements - YouTube