css 40media measurements

1// Extra small devices (portrait phones, less than 576px)
2// No media query for `xs` since this is the default in Bootstrap
3// Small devices (landscape phones, 576px and up)
4@media (min-width: 576px) { ... }
5// Medium devices (tablets, 768px and up)
6@media (min-width: 768px) { ... }
7// Large devices (desktops, 992px and up)
8@media (min-width: 992px) { ... }
9// Extra large devices (large desktops, 1200px and up)
10@media (min-width: 1200px) { ... }