1.13 Minor improvements on the website [Anton] [1hr]

[vaols]

• [x] Steven's and Rain's photos
• [x] Border around the report image
• [x] after resizing the cross disappears, but video and team buttons remain on the same line
• [x] the background glitch in Second.png
• [x] team member titles missing
• [x] credits regarding the background image are missing
• [x] team member icons overlap with the report section when the window is made smaller in vertical direction
• [x] change the video to our own
• [x] title of the report page should be black
• [x] fix the color of the control menu buttons