.iwb-checkbox {
    display: inline-block;
    position: relative;
    padding-left: 30px;
    color: $iwb-color;
    margin-bottom: 10px;
    cursor: pointer;
    font-size: .875rem;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
    cursor: pointer;

    > input {
        position: absolute;
        z-index: -1;
        opacity: 0;
        filter: alpha(opacity=0);
    }

    > span {
        position: relative;
    }

    > span:before {
        content: '';
        border-radius: 3px;
        background: none;
        position: absolute;
        top: 0;
        left: -24px;
        height: 18px;
        width: 18px;
        color: inherit;
        border: 1px solid;
    }

    > span:after {
        content: '';
        position: absolute;
        display: none;
    }

    input:checked ~ span:before {
        -webkit-transition: all 0.3s;
        transition: all 0.3s;
        background: none;
    }

    input:checked ~ span:after {
        display: block;
        top: 3px;
        left: -18px;
        width: 5px;
        height: 10px;
        border-color: inherit;
        border-style: solid;
        border-width: 0 2px 2px 0 !important;
        -webkit-transform: rotate(45deg);
        transform: rotate(45deg);
    }

    &.checkbox-solid {
        input:checked ~ span:before {
            -webkit-transition: all 0.3s;
            transition: all 0.3s;
            background: $iwb-color;
        }

        input:checked ~ span:after {
            border-color: #fff;
        }
    }

    @each $name, $color in $colors {
        @include iwb-checkbox-variant($name, $color);
    }
}