CSS Column widths in EMs

/*
    COLUMN: 60px (3.750em)
    GUTTER: 20px (1.25em or 0.625em on each side)
    
     1x =  60px |  3.750em
     2x = 140px |  8.750em
     3x = 220px | 13.750em
     4x = 300px | 18.750em
     5x = 380px | 23.750em
     6x = 460px | 28.750em
     7x = 540px | 33.750em
     8x = 620px | 38.750em
     9x = 700px | 43.750em
    10x = 780px | 48.750em
    11x = 860px | 53.750em
    12x = 940px | 58.750em
*/


Breakpoint sin ems


bp-small : 24em; $bp-med : 46.8em; $bp-large : 50em; $bp-xl : 73em;

Tweak points in ems


$bp-small : 24em; $bp-small-2 : 29.75em; $bp-small-3 : 39.8em; $bp-med : 46.8em; $bp-med-2 : 48em; $bp-large : 50em; $bp-large-2 : 54.5em; $bp-xl : 60em; $bp-xl-2 : 67em;

Responsive Video

video {  
   width:100%; 
   max-width:500px; 
   height:auto; 
}