Some helpful styles for formatting D2 digrams in a more pleasant way.
```
classes: {
danger: {
style: {
fill: "#f44336"
stroke: "#d32f2f"
font-color: "#ffffff"
border-radius: 4
}
}
success: {
style: {
fill: "#4caf50"
stroke: "#388e3c"
font-color: "#ffffff"
border-radius: 4
}
}
primary: {
style: {
fill: "#2196f3"
stroke: "#1976d2"
font-color: "#ffffff"
border-radius: 4
}
}
secondary: {
style: {
fill: "#757575"
stroke: "#616161"
font-color: "#ffffff"
border-radius: 4
}
}
outlined: {
style: {
fill: "#ffffff"
stroke: "#2196f3"
stroke-width: 2
font-color: "#2196f3"
border-radius: 4
}
}
disabled: {
style: {
fill: "#e0e0e0"
stroke: "#bdbdbd"
font-color: "#9e9e9e"
border-radius: 4
}
}
warning: {
style: {
fill: "#ff9800"
stroke: "#f57c00"
font-color: "#ffffff"
border-radius: 4
}
}
info: {
style: {
fill: "#00bcd4"
stroke: "#0097a7"
font-color: "#ffffff"
border-radius: 4
}
}
}
```