Css background transparent high resolution

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For css background high resolution 10 images found by accurate search and more added by similar match. How to remove the white background from an image to make it, how to make a logo have a transparent background. Curve background vector. How to do knockout text, a responsive css hero background image, css background transparent high resolution, creating high resolution background images in css. Transparent text cut out of background.

960 x 440 90 0
1280 x 720 81 0
650 x 260 18 0
929 x 408 85 0
2880 x 1800 17 0
5000 x 2617 8 0
1280 x 720 16 0
588 x 160 11 0
240 x 320 17 0
720 x 1280 11 0