.btn {
    font-weight: 400;
    padding: 6px 12px;
    border-radius: 4px;
    box-shadow: none;
}

    .btn:focus,
    .btn:active {
        box-shadow: none;
    }

/* btn-default */
.btn-default {
    color: #333;
    background-color: #fff;
    border: 1px solid #ccc;
}

    .btn-default:hover,
    .btn-default:focus {
        background-color: #e6e6e6;
        border-color: #adadad;
    }

    .btn-default:active {
        background-color: #d4d4d4;
        border-color: #8c8c8c;
    }

/* btn-primary (BS3 藍色) */
.btn-primary {
    background-color: #337ab7;
    border-color: #2e6da4;
}

    .btn-primary:hover {
        background-color: #286090;
        border-color: #204d74;
    }