main{width:900px;margin:auto;padding:3rem 0;line-height:1.5}main :is(h1,h2,h3,h4,h5,h6,p,ul,ol){margin-bottom:1rem}.cb{color:#339}.w90{width:90px}.w120{width:120px}.mb0{margin-bottom:0}@media screen and (max-width:900px){main{width:100%;padding:2rem}}