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//小屏幕斷點基礎框架
@media only screen { } /* Define mobile styles */
@media only screen and (max-width: 40em) { } /* max-width 640px, mobile-only styles, use when QAing mobile issues */
//中等屏幕
@media only screen and (min-width: 40.063em) { } /* min-width 641px, medium screens */
@media only screen and (min-width: 40.063em) and (max-width: 64em) { } /* min-width 641px and max-width 1024px, use when QAing tablet-only issues */
//大屏幕
@media only screen and (min-width: 64.063em) { } /* min-width 1025px, large screens */
@media only screen and (min-width: 64.063em) and (max-width: 90em) { } /* min-width 1025px and max-width 1440px, use when QAing large screen-only issues */
// XLARGE屏幕
@media only screen and (min-width: 90.063em) { } /* min-width 1441px, xlarge screens */
@media only screen and (min-width: 90.063em) and (max-width: 120em) { } /* min-width 1441px and max-width 1920px, use when QAing xlarge screen-only issues */
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// XXLarge屏幕
@media only screen and (min-width: 120.063em) { } /* min-width 1921px, xxlarge screens */
以上是基礎框架標準破發點。
對於移動可以看出折點是640最大寬度,如果設計提供給我的手機是什麼大於640 &同樣是案例Destkop &平板電腦。改變設計提供的基礎斷點是否有意義?有適當推理的答案會很有幫助。