buttons.css

html {
    margin:20px;
}

.sharing-method {
    position:relative;
    padding:0 8px 0 46px;
    border:1px solid #CCC;
    font-size:13px;
    line-height:28px;
    color:#666;
    min-width:120px;
    text-align:center;
    cursor:pointer;
    -webkit-border-radius: 4px;
            border-radius: 4px;
    text-shadow: 0 1px 1px #FFFFFF;
    filter: dropshadow(color=#FFFFFF, offx=0, offy=1);
    background: #f0f0f0; /* Old browsers */
    background: -moz-linear-gradient(top,  #f9f9f9 0%, #e5e5e5 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#f9f9f9), color-stop(100%,#e5e5e5)); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  #f9f9f9 0%,#e5e5e5 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  #f9f9f9 0%,#e5e5e5 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  #f9f9f9 0%,#e5e5e5 100%); /* IE10+ */
    background: linear-gradient(to bottom,  #f9f9f9 0%,#e5e5e5 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#f9f9f9', endColorstr='#e5e5e5',GradientType=0 ); /* IE6-9 */
}

.sharing-method:after {
    content: '';
    width:38px;
    height:30px;
    display:block;
    background-repeat: no-repeat;
    position:absolute;
    top:-1px;
    left:-1px;
    -webkit-border-radius: 4px 0 0 4px;
            border-radius: 4px 0 0 4px;
}

.sharing-method.facebook:after {
background-image: url(data:image/png;base64,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);
}

.sharing-method.twitter:after {
background-image: url(data:image/png;base64,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);
}

.sharing-method.google:after {
background-image: 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buttons.html

<button class="sharing-method facebook">Facebook</button>

<button class="sharing-method twitter">Twitter</button>

<button class="sharing-method google">Google+</button>

<button class="sharing-method email">Email</button>

<button class="sharing-method none">Generic</button>

<button class="sharing-method facebook">Share on Facebook</button>

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