Converting css to less

问题

I am trying to convert some css to less, but on compile i got some errors? Here is what i have in css, how to convert this to less

#preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #2AABE2;
    background: rgba(42, 171, 226, 0.5);
    display: none;
    -khtml-opacity: 0.80;
    opacity: 0.80;
    -ms-filter:"progid:DXImageTransform.Microsoft.Alpha"(Opacity=60);
    filter: progid:DXImageTransform.Microsoft.Alpha(opacity=60);
    filter:alpha(opacity=60);
    z-index: 20000;
    text-align: center;
}
.preloader-text {
    color: white;
    font-size:16px !important;
    margin: auto auto 10px;
}
.preloader-holder {
    background-position: center center;
    background-repeat: no-repeat;
    height: 200px;
    left: 50%;
    margin: -100px 0 0 -200px;
    position: absolute;
    top: 50%;
    width: 400px;
}

回答1:

Simply use escape character ~:

#preloader {
    ....
    -ms-filter:~'progid:DXImageTransform.Microsoft.Alpha"(Opacity=60)';
    filter: ~'progid:DXImageTransform.Microsoft.Alpha(opacity=60)';
    ....
}

remember to use single quotes to contain entire string, because value already containd double ones.

回答2:

Try prefixing the string with ~

-ms-filter: ~"progid:DXImageTransform.Microsoft.Alpha(opacity=60)";

or

-ms-filter: e("progid:DXImageTransform.Microsoft.Alpha(opacity=60)");

Check out string functions on less docs

来源：https://stackoverflow.com/questions/28149527/converting-css-to-less