Handy CSS http://tympanus.net/codrops/2012/10/25/kick-start-your-project-a-collection-of-handy-css-snippets/

mixins.scss

.transform(@string) {
    -webkit-transform:  @string;
    -moz-transform:     @string;
    -ms-transform:      @string;
    -o-transform:       @string;
    transform:          @string;
}

.rotate(@deg) {
    -webkit-transform:  rotate(@deg);
    -moz-transform:     rotate(@deg);
    -ms-transform:      rotate(@deg);
    -o-transform:       rotate(@deg);
    transform:          rotate(@deg);
}

.scale(@factor) {
    -webkit-transform:  scale(@factor);
    -moz-transform:     scale(@factor);
    -ms-transform:      scale(@factor);
    -o-transform:       scale(@factor);
    transform:          scale(@factor);
}
 
.translate (@x, @y) {
    -webkit-transform:  translate(@x, @y);
    -moz-transform:     translate(@x, @y);
    -ms-transform:      translate(@x, @y);
    -o-transform:       translate(@x, @y);
    transform:          translate(@x, @y);
}

.transition(@string: all 0.3s ease-out) {
    -webkit-transition: @string;
    -moz-transition:    @string;
    -ms-transition:     @string;
    -o-transition:      @string;
    transition:         @string;
}

.box-sizing(@value: border-box) {
    -webkit-box-sizing: @value;
    -moz-box-sizing:    @value;
    -box-sizing:        @value;
}

.placement(@type, @top, @right, @bottom, @left) {
    position: @type;
    top: @top;
    right: @right;
    bottom: @bottom;
    left: @left;
}

.font-size($pxValue){
    @remValue: (@pxValue / 10);
    font-size: ~"@{pxValue}px";
    font-size: ~"@{remValue}rem";
}

print.svg.partial.html

<!-- SVG version of grayscale filter: desaturate.svg -->
<svg version="1.1" xmlns="http://www.w3.org/2000/svg">
    <filter id="grayscale">
        <feColorMatrix type="matrix" values="0.3333 0.3333 0.3333 0 0
            0.3333 0.3333 0.3333 0 0
            0.3333 0.3333 0.3333 0 0
            0  0  0  1 0"/>
    </filter>
</svg>

starter.css

/* Shorthand classes */
.float-left {
    float: left;
}
 
.float-right {
    float: right;
}

.hide {
    display: none;
}
 
.show {
    display: block;
}

/* Design-related snippets */
.content {
    font: 1em/1.4 Segoe, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}
 
.title {
    font: 1.7em/1.2 Baskerville, "Baskerville old face", "Hoefler Text", Garamond, "Times New Roman", serif;
}
 
.code {
    font: 0.8em/1.6 Monaco, Mono-Space, monospace;
}

.disabled {
    pointer-events: none;
    opacity: 0.5;
}

table tr:nth-child(even) {
    /* Zebra pattern */
    background: rgba(0,0,0,0.1);
}

a {
    text-decoration: none;
    color: #08C;
    transition: all 0.3s ease-out;
    position: relative;
    padding: .5em;
    margin: -.5em;
}
 
a:hover { color: #0AF; }

/* Development-related snippets */
*, *:before, *:after {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.clearfix:before,
.clearfix:after {
    content: " ";
    display: table;
}
 
.clearfix:after {
    clear: both;
}
 
/* IE6/7 support */
.clearfix {
    *zoom: 1;
}

.visuallyhidden {
    position: absolute;
    width: 1px; /* Setting this to 0 make it invisible for VoiceOver */
    height: 1px; /* Setting this to 0 make it invisible for VoiceOver */
    padding: 0;
    margin: -1px;
    border: 0;
    clip: rect(0 0 0 0);
    overflow: hidden;   
}

.ir {
    text-indent: 100%;
    white-space: nowrap;
    overflow: hidden;
}

.break {
    -ms-word-break: break-all;
    word-break: break-all;
 
    word-break: break-word;
 
    -webkit-hyphens: auto;
    -moz-hyphens: auto;
    hyphens: auto;
}
 
.ellipsis {
    width: 250px;
    white-space: nowrap;
    overflow: hidden;
    -ms-text-overflow: ellipsis; /* Required for IE8 */
    -o-text-overflow: ellipsis; /* Required for Opera */
    text-overflow: ellipsis;
}

pre {
    white-space: pre-wrap;       /* Chrome & Safari */
    white-space: -moz-pre-wrap;  /* Mozilla since 1999 */
    white-space: -pre-wrap;      /* Opera 4-6 */
    white-space: -o-pre-wrap;    /* Opera 7 */
    word-wrap: break-word;       /* Internet Explorer 5.5+ */
}

/* Miscellaneous */
@media print {
    * {
        background: none !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
 
        /* Images, vectors and such */
        filter: Gray();                          /* IE4-8: depreciated */
        filter: url('desaturate.svg#grayscale'); /* SVG version for IE10, Firefox, Safari 5 and Opera */
        -webkit-filter: grayscale(100%);         /* Chrome + Safari 6 */
        -moz-filter: grayscale(100%);            /* Future proof */
        -ms-filter: grayscale(100%);             /* Future proof */
        -o-filter: grayscale(100%);              /* Future proof */
        filter: grayscale(100%);                 /* Future proof or polyfilled */
    }
 
    a {
        text-decoration: underline;
    }
 
    a[href]:after {
        content: " (" attr(href) ")";
    }
 
    a[href="#"],
    a[href="javascript:"] {
        content: "";
    }
}

@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and (   min--moz-device-pixel-ratio: 2), /* Looks like a bug, so may want to add: */
only screen and (   -moz-min-device-pixel-ratio: 2),
only screen and (     -o-min-device-pixel-ratio: 2/1),
only screen and (        min-device-pixel-ratio: 2),
only screen and (                min-resolution: 192dpi),
only screen and (                min-resolution: 2dppx) {
    /* Your retina specific stuff here */
}