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/* crossed */

.crossed {
    background: 
       linear-gradient(to top left,
           rgba(0,0,0,0) 0%,
           rgba(0,0,0,0) calc(50% - 0.8px),
           rgba(0,0,0,1) 50%,
           rgba(0,0,0,0) calc(50% + 0.8px),
           rgba(0,0,0,0) 100%),
       linear-gradient(to top right,
           rgba(0,0,0,0) 0%,
           rgba(0,0,0,0) calc(50% - 0.8px),
           rgba(0,0,0,1) 50%,
           rgba(0,0,0,0) calc(50% + 0.8px),
           rgba(0,0,0,0) 100%);
}

/* http://stackoverflow.com/questions/18012420/draw-diagonal-lines-in-div-background-with-css */