Today we are going to examples of rounded corners CSS for website design and development.
Infinity Glowline Css Corners Box Buttons

You can see the results below.
See the Pen Infinity glowline CSS corners box / buttons by Sabin Tudor (@NyX) on CodePen.
Cutting Corners With CSS

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See the Pen Cutting Corners with CSS by Martin Duran (@Martin-Duran) on CodePen.
Border-Corner-Shape CSS

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See the Pen Remember Yogi Bear? by Ana Tudor (@thebabydino) on CodePen.
Paper With Sellotaped Corners

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See the Pen Paper with sellotaped corners by Suzanne Aitchison (@aitchiss) on CodePen.
Rounded Corners with SVG Polygon

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See the Pen "Rounded" Corners with SVG Polygon by Jessica (@kattixie) on CodePen.
Corner Ribbons for Cards

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See the Pen Ribbon Corner-copia by Adam Walker (@renduh) on CodePen.
Deformable Element

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See the Pen Deformable Element by Ben Rowles (@browles) on CodePen.
Dynamic Sharp Corners

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See the Pen Dynamic Sharp Corners by Wixel (@WixelHQ) on CodePen.
Card with rounded corners

You can see the results below.
See the Pen Card with rounded corners by Jaroslaw Hubert (@jhkepa) on CodePen.
Cut cornered button without border

You can see the results below.
See the Pen Cut cornered button without border by Luc Princen (@lucprincen) on CodePen.
Evangelizing Corner-Shape

You can see the results below.
See the Pen Evangelizing corner-shape #1, powered by Augmented-UI: Prompt by Rock Starwind (@RockStarwind) on CodePen.
Post-it Note With Lifted Corners

You can see the results below.
See the Pen Post-It note with lifted corners by John VDL (@jvdl) on CodePen.
Fancy Corners with Gradients in CSS Masks

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See the Pen Fancy Corners with Gradients in CSS Masks by yoksel (@yoksel) on CodePen.
Button With Frame Corners

You can see the results below.
See the Pen Button with frame corners by Monica Dinculescu (@notwaldorf) on CodePen.
CSS3 tucked corners

You can see the results below.
See the Pen CSS3 tucked corners by Catalin Rosu (@catalinred) on CodePen.
Box With Borders and Fat Corners

You can see the results below.
See the Pen Box with borders and fat corners by Kim Bertelsen (@kimmenbert) on CodePen.
Lifted Corners

You can see the results below.
See the Pen Lifted Corners by Eric Thayer (@ericthayer) on CodePen.
Summary:
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