.userguide{display:grid;grid-template-columns:1fr;width:600px;margin:0 auto}.userguide>div{margin:3px;line-height:normal}.userguide img{margin:5px auto}.userguide .guide-title{margin:10px 0;background-color:#98fb98;text-align:center;font-size:large}@media screen and (max-width: 640px){.userguide{grid-template-columns:1fr;width:auto}}