In Angular Material Design, exists any importants classes CSS.
This is classes, indicator the first colors on elements.
md-default-theme // Indicator the theme default
md-button // Indicator the button
md-raised // This is used for display: block in element em apply background color.
md-cornered // Create a button com border-radius: 0
md-padding // Add padding 16px default
Attibute layout-padding // Add padding 8px default
layout-wrap
flex-sm="100" flex-gt-sm="50" flex-gt-md="25" // resolution
.md-ripple-container // add position absolute, left:0 top:0 width: 100%, height: 100%, pointer-events
md-fab md-fab-bottom-left fab-position // insert button with border-radius 50% left or right , bottom or top
md-medium-tall // used in <md-toolbar>