.btn-social {
    position: relative;
    padding-left: 44px;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis
}

.btn-social>:first-child {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 32px;
    line-height: 34px;
    font-size: 1.6em;
    text-align: center;
    border-right: 1px solid rgba(0, 0, 0, 0.2)
}

.btn-social.btn-lg {
    padding-left: 61px
}

.btn-social.btn-lg>:first-child {
    line-height: 45px;
    width: 45px;
    font-size: 1.8em
}

.btn-social.btn-sm {
    padding-left: 38px
}

.btn-social.btn-sm>:first-child {
    line-height: 28px;
    width: 28px;
    font-size: 1.4em
}

.btn-social.btn-xs {
    padding-left: 30px
}

.btn-social.btn-xs>:first-child {
    line-height: 20px;
    width: 20px;
    font-size: 1.2em
}

.btn-social-icon {
    position: relative;
    padding-left: 44px;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    height: 34px;
    width: 34px;
    padding: 0
}

.btn-social-icon>:first-child {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 32px;
    line-height: 34px;
    font-size: 1.6em;
    text-align: center;
    border-right: 1px solid rgba(0, 0, 0, 0.2)
}

.btn-social-icon.btn-lg {
    padding-left: 61px
}

.btn-social-icon.btn-lg>:first-child {
    line-height: 45px;
    width: 45px;
    font-size: 1.8em
}

.btn-social-icon.btn-sm {
    padding-left: 38px
}

.btn-social-icon.btn-sm>:first-child {
    line-height: 28px;
    width: 28px;
    font-size: 1.4em
}

.btn-social-icon.btn-xs {
    padding-left: 30px
}

.btn-social-icon.btn-xs>:first-child {
    line-height: 20px;
    width: 20px;
    font-size: 1.2em
}

.btn-social-icon>:first-child {
    border: none;
    text-align: center;
    width: 100% !important
}

.btn-social-icon.btn-lg {
    height: 45px;
    width: 45px;
    padding-left: 0;
    padding-right: 0
}

.btn-social-icon.btn-sm {
    height: 30px;
    width: 30px;
    padding-left: 0;
    padding-right: 0
}

.btn-social-icon.btn-xs {
    height: 22px;
    width: 22px;
    padding-left: 0;
    padding-right: 0
}

.btn-facebook {
    color: #fff;
    background-color: #3b5998;
    border-color: rgba(0, 0, 0, 0.2)
}

.btn-facebook:focus,
.btn-facebook.focus {
    color: #fff;
    background-color: #2d4373;
    border-color: rgba(0, 0, 0, 0.2)
}

.btn-facebook:hover {
    color: #fff;
    background-color: #2d4373;
    border-color: rgba(0, 0, 0, 0.2)
}

.btn-facebook:active,
.btn-facebook.active,
.open>.dropdown-toggle.btn-facebook {
    color: #fff;
    background-color: #2d4373;
    border-color: rgba(0, 0, 0, 0.2)
}

.btn-facebook:active:hover,
.btn-facebook.active:hover,
.open>.dropdown-toggle.btn-facebook:hover,
.btn-facebook:active:focus,
.btn-facebook.active:focus,
.open>.dropdown-toggle.btn-facebook:focus,
.btn-facebook:active.focus,
.btn-facebook.active.focus,
.open>.dropdown-toggle.btn-facebook.focus {
    color: #fff;
    background-color: #23345a;
    border-color: rgba(0, 0, 0, 0.2)
}

.btn-facebook:active,
.btn-facebook.active,
.open>.dropdown-toggle.btn-facebook {
    background-image: none
}


.btn-line {
    color: #fff;
    background-color: #06C755;
    border-color: rgba(255, 255, 255, 0.2)
}

.btn-line:focus,
.btn-line.focus {
    color: #fff;
    background-color: #05B34C;
    border-color: rgba(255, 255, 255, 0.2)
}

.btn-line:hover {
    color: #fff;
    background-color: #05B34C;
    border-color: rgba(255, 255, 255, 0.2)
}

.btn-line:active,
.btn-line.active,
.open>.dropdown-toggle.btn-line {
    color: #fff;
    background-color: #05B34C;
    border-color: rgba(255, 255, 255, 0.2)
}

.btn-line:active:hover,
.btn-line.active:hover,
.open>.dropdown-toggle.btn-line:hover,
.btn-line:active:focus,
.btn-line.active:focus,
.open>.dropdown-toggle.btn-line:focus,
.btn-line:active.focus,
.btn-line.active.focus,
.open>.dropdown-toggle.btn-line.focus {
    color: #fff;
    background-color: #048B3B;
    border-color: rgba(255, 255, 255, 0.2)
}

.btn-line:active,
.btn-line.active,
.open>.dropdown-toggle.btn-line {
    background-image: none
}

.btn-basic {
    color: #fff;
    background-color: #4a4a4a; /* 铁灰色 */
    border-color: rgba(0, 0, 0, 0.2);
}

.btn-basic:focus,
.btn-basic.focus {
    color: #fff;
    background-color: #333333; /* 更深的铁灰色 */
    border-color: rgba(0, 0, 0, 0.2);
}

.btn-basic:hover {
    color: #fff;
    background-color: #333333; /* 更深的铁灰色 */
    border-color: rgba(0, 0, 0, 0.2);
}

.btn-basic:active,
.btn-basic.active,
.open>.dropdown-toggle.btn-basic {
    color: #fff;
    background-color: #333333; /* 更深的铁灰色 */
    border-color: rgba(0, 0, 0, 0.2);
}

.btn-basic:active:hover,
.btn-basic.active:hover,
.open>.dropdown-toggle.btn-basic:hover,
.btn-basic:active:focus,
.btn-basic.active:focus,
.open>.dropdown-toggle.btn-basic:focus,
.btn-basic:active.focus,
.btn-basic.active.focus,
.open>.dropdown-toggle.btn-basic.focus {
    color: #fff;
    background-color: #1a1a1a; /* 更深的铁灰色 */
    border-color: rgba(0, 0, 0, 0.2);
}

.btn-basic:active,
.btn-basic.active,
.open>.dropdown-toggle.btn-basic {
    background-image: none;
}