.checkbox-wrapper { position: relative; }

.checkbox-wrapper label {
    font-weight: normal;
    font-size: 20px;
    color: #333;
    padding-left: 40px;
    vertical-align: top;
}

.checkbox-wrapper span {
    width: 20px;
    height: 20px;
    cursor: pointer;
    position: absolute;
    top: 3px;
    left: 0;
    background: transparent;
    border: 1px solid white;
}
.checkbox-wrapper span:after {
    content: '';
    width: 14px;
    height: 7px;
    position: absolute;
    top: 3px;
    left: 2px;
    border: 2px solid #ffffff;
    border-top: none;
    border-right: none;
    background: transparent;
    opacity: 0;
    -webkit-transform: rotate(-45deg);
            transform: rotate(-45deg);
}
.checkbox-wrapper span:hover::after {
    opacity: 0.5;
}
.checkbox-wrapper input[type=checkbox] {
    display: none;
}
.checkbox-wrapper input[type=checkbox]:checked + span:after {
    opacity: 1;
}

/* end .squaredFour */