JSFiddle - React, Tailwind, and code Playground

HTML

<div class="with_zindex">
	<input type="Checkbox" name="TOS" value="read">
    <span class="catItemExtraFieldsValue">
        <img src="http://gutgeordnet.de/reise/images/epaypal_de.gif">
    </span>
</div>

CSS

.with_zindex {position: relative;}

.with_zindex input[type=checkbox] {
    background-color:#fafafa;
    filter: alpha(opacity=50);
    position: absolute;
    z-index: 50;
    top: 10px;
    left: -35px;
    width: 135px;
    text-align: right;
    vertical-align: top;
    cursor: pointer;
}

.with_zindex input[type=checkbox] + .catItemExtraFieldsValue {
    position: relative;
    opacity: .5;
    -moz-opacity: .5;
    z-index: 45;
}

.with_zindex input[type=checkbox]:after {
    content: 'I accept';
    font-size: 14px;
    vertical-align: top;
    line-height: 1em;
    font-weight: bold;
    font-family: tahoma;
}

.with_zindex input[type=checkbox]:checked {position: static; display: none;}
.with_zindex input[type=checkbox]:checked + .catItemExtraFieldsValue {
    position: static;
	background-color: transparent;
    opacity: 1;
    -moz-opacity: 1;
}