Emmet Reference

! # HTML5 boilerplate
div # 

p # 

a # 
img # 
link:css # link to stylesheet
script:src # script with src

div>ul>li # nested elements
div+p+span # sibling elements
div>ul>li*3 # multiply (3 items)
div>(header>nav)+main # grouping with ()
ul>li*5 # 5 list items
div^p # climb up

div.container # 

div#header # 

a[href="#" target] # custom attributes
p{Click me} # 
Click me
ul>li.item$*3 # item1, item2, item3
h$[title=item$]{Header $}*3 # numbered items

m10 # margin: 10px
p20 # padding: 20px
w100p # width: 100%
h50vh # height: 50vh
fz16 # font-size: 16px
df # display: flex
jcc # justify-content: center

table+ # full table structure
ul+ # ul with one li
form:post # form with POST method
input:text # text input
input:email # email input
btn # 
.row>.col-md-6*2 # Bootstrap grid