Simple implementation of CSS buttons

btn.css

.btn {
    background-color: #e9e9e9;
    border: 1px solid #cacaca;
    border-bottom-color: #c3c3c3;
    -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.3);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.3);
    display: inline-block;
    *display: inline;
    *zoom: 1;
    padding: 6px 14px;
    margin-bottom: 0;
    font-size: 12px;
    font-weight: 700;
    -webkit-border-radius: 1px;
    border-radius: 1px;
    line-height: 17px;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    *border: 0;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    position: relative;
    outline: 0;
    *margin-left: .3em;
}
.btn,
.btn:hover,
.btn:focus,
.btn:active {
    color: #444;
    text-shadow: 0 1px 0 #f6f6f6;
}
.btn:hover,
.btn:focus {
    background-color: #f3f3f3;
}
.btn:active,
.btn.active,
.btn:hover:active {
    border-color: #a9a9a9;
    background-color: #dfdfdf;
    -webkit-box-shadow: inset 0 1px 3px #d0d0d0;
    box-shadow: inset 0 1px 3px #d0d0d0;
}
.btn.btn-link,
.netflam-footer li a { color: #e9e9e9 }
.btn.btn-link:hover,
.netflam-footer li a { color: #fff }
.btn:first-child { *margin-left: 0 }
.btn:hover,
.btn:focus {
    -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.3),0 1px 2px rgba(0,0,0,.15);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.3),0 1px 2px rgba(0,0,0,.15);
}
.btn.disabled,
.btn[disabled] {
    cursor: default;
    pointer-events: none;
    opacity: .8;
    -ms-filter: alpha(Opacity=80);
    filter: alpha(opacity=80);
    -webkit-box-shadow: none;
    box-shadow: none;
}
.btn [data-icon]:before,
.btn [class^=d-icon-]:before,
.btn [class*=" d-icon-"]:before {
    font-size: 15px;
    line-height: 1.2em;
    vertical-align: top;
}
.btn-dropdown { padding-right: 35px }
.btn-dropdown .dropdown-carrot {
    border-top-color: #444;
    right: 15px;
    top: 12px;
    vertical-align: middle;
    margin-left: 10px;
}
.btn-primary {
    background-color: #3274d1;
    border: 1px solid #2458a2;
    border-bottom-color: #215195;
}
.btn-primary,
.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    color: #fff;
    text-shadow: 0 -1px 0 #265daa;
}
.btn-primary:hover,
.btn-primary:focus {
    background-color: #437fd5;
}
.btn-primary:active,
.btn-primary.active,
.btn-primary:hover:active {
    border-color: #183b6b;
    background-color: #2c6ac3;
    -webkit-box-shadow: inset 0 1px 3px #265daa;
    box-shadow: inset 0 1px 3px #265daa;
}
.btn-primary.btn-link { color: #3274d1 }
.btn-primary.btn-link:hover { color: #5c90da }
.btn-facebook {
    background-color: #2d4785;
    border: 1px solid #1e2f57;
    border-bottom-color: #1a284c;
}
.btn-facebook,
.btn-facebook:hover,
.btn-facebook:focus,
.btn-facebook:active {
    color: #fff;
    text-shadow: 0 -1px 0 #20335f;
}
.btn-facebook:hover,
.btn-facebook:focus {
    background-color: #324f94;
}
.btn-facebook:active,
.btn-facebook.active,
.btn-facebook:hover:active {
    border-color: #0d1426;
    background-color: #283f76;
    -webkit-box-shadow: inset 0 1px 3px #20335f;
    box-shadow: inset 0 1px 3px #20335f;
}
.btn-facebook.btn-link { color: #2d4785 }
.btn-facebook.btn-link:hover { color: #3a5bab }
.btn-twitter {
    background-color: #0099ec;
    border: 1px solid #0071af;
    border-bottom-color: #0067a0;
}
.btn-twitter,
.btn-twitter:hover,
.btn-twitter:focus,
.btn-twitter:active {
    color: #fff;
    text-shadow: 0 -1px 0 #0078b9;
}
.btn-twitter:hover,
.btn-twitter:focus {
    background-color: #01a6ff;
}
.btn-twitter:active,
.btn-twitter.active,
.btn-twitter:hover:active {
    border-color: #00466d;
    background-color: #008cd8;
    -webkit-box-shadow: inset 0 1px 3px #0078b9;
    box-shadow: inset 0 1px 3px #0078b9;
}
.btn-twitter.btn-link { color: #0099ec }
.btn-twitter.btn-link:hover { color: #20b1ff }
.btn-googleplus {
    background-color: #e13800;
    border: 1px solid #a42900;
    border-bottom-color: #952500;
}
.btn-googleplus,
.btn-googleplus:hover,
.btn-googleplus:focus,
.btn-googleplus:active {
    color: #fff;
    text-shadow: 0 -1px 0 #ae2b00;
}
.btn-googleplus:hover,
.btn-googleplus:focus {
    background-color: #f53d00;
}
.btn-googleplus:active,
.btn-googleplus.active,
.btn-googleplus:hover:active {
    border-color: #621800;
    background-color: #cd3300;
    -webkit-box-shadow: inset 0 1px 3px #ae2b00;
    box-shadow: inset 0 1px 3px #ae2b00;
}
.btn-googleplus.btn-link { color: #e13800 }
.btn-googleplus.btn-link:hover { color: #ff4f15 }
.btn-huge {
    padding: 12px 18px;
    font-size: 15px;
}
.btn-large {
    padding: 9px 14px;
    font-size: 15px;
}
.btn-large [class^=icon-] { margin-top: 2px }
.btn-small {
    padding: 3px 9px;
    font-size: 12px;
}
.btn-small [class^=icon-] { margin-top: 0 }
.btn-block {
    display: block;
    width: 100%;
    padding-left: 0;
    padding-right: 0;
}
.btn-block+.btn-block { margin-top: 5px }
.btn-group .btn-half {
    display: block;
    float: left;
    width: 49%;
    padding-left: 0;
    padding-right: 0;
}
.btn-group .btn-half:nth-child(2) { margin-left: 2% }
button.btn,
input[type=submit].btn {
    *padding-top: 3px;
    *padding-bottom: 3px;
}
button.btn::-moz-focus-inner,
input[type=submit].btn::-moz-focus-inner {
    padding: 0;
    border: 0;
}
button.btn.btn-large,
input[type=submit].btn.btn-large {
    *padding-top: 7px;
    *padding-bottom: 7px;
}
button.btn.btn-small,
input[type=submit].btn.btn-small {
    *padding-top: 3px;
    *padding-bottom: 3px;
}
button.btn.btn-mini,
input[type=submit].btn.btn-mini {
    *padding-top: 1px;
    *padding-bottom: 1px;
}
.btn.btn-link,
.btn.btn-link:active,
.btn.btn-link:hover,
.netflam-footer li a {
    background-color: transparent;
    background-image: none;
    -webkit-box-shadow: none;
    box-shadow: none;
    border-color: transparent;
}
.btn.btn-link,
.netflam-footer li a {
    text-transform: none;
    cursor: pointer;
    color: #bbb;
    font-weight: 500;
    padding: 0;
}
.btn.btn-link:hover,
.netflam-footer li a:hover { color: #3274d1 }