Bootstrap whole in one
Bootstrap Grid: In col-md-4 , -4 means each column will take 4/12 of row and -md means this property will be applied till md breakpoint. <! DOCTYPE html > < html lang =" en "> < head > < meta charset =" UTF-8 "> < meta name =" viewport " content =" width=device-width, initial-scale=1.0 "> < title > Document </ title > < link rel =" stylesheet " href =" node_modules/bootstrap/dist/css/bootstrap.css "> < link rel =" stylesheet " href =" style.css "> < style > body { background-color : # 292d3e ; } . c { background-color : lightblue ; } . cc { bor...