AcCSS

github

Tips > Protect property value

AcCSS source

div {
    /* First color value will be smashed */
    color: black;
    color: red;
    
    /* Use of '+' prevent first display value of smashing */
    +display: -moz-inline-stack;
    display: inline-block;
}

CSS result

div{
    color:red;
    display:-moz-inline-stack;
    display:inline-block;
}