• Large Desktop: >=1200px; Content Container: 1170px;
• Desktop: >=992px; Content Container: 970px;
• Tablet: >= 768px; Content Container: 750px;
• Phone: < 768px; Content Container: auto (100% - 15px padding on both side) - personal suggestion: using 320 as the device width and 290 as the content width

Usually Large Desktop with share most of the design with desktop. Tablet will be another layout, and a extra small layout for iPhone