checkboxes.css

.checkbox label:after, 
.radio label:after {
    content: '';
    display: table;
    clear: both;
}

.checkbox .cr,
.radio .cr {
    position: relative;
    display: inline-block;
    border: 1px solid #a9a9a9;
    border-radius: .25em;
    width: 1.3em;
    height: 1.3em;
    float: left;
    margin-right: .5em;
}

.radio .cr {
    border-radius: 50%;
}

.checkbox .cr .cr-icon,
.radio .cr .cr-icon {
    position: absolute;
    font-size: .8em;
    line-height: 0;
    top: 50%;
    left: 20%;
}

.radio .cr .cr-icon {
    margin-left: 0.04em;
}

.checkbox label input[type="checkbox"],
.radio label input[type="radio"] {
    display: none;
}

.checkbox label input[type="checkbox"] + .cr > .cr-icon,
.radio label input[type="radio"] + .cr > .cr-icon {
    transform: scale(3) rotateZ(-20deg);
    opacity: 0;
    transition: all .3s ease-in;
}

.checkbox label input[type="checkbox"]:checked + .cr > .cr-icon,
.radio label input[type="radio"]:checked + .cr > .cr-icon {
    transform: scale(1) rotateZ(0deg);
    opacity: 1;
}

.checkbox label input[type="checkbox"]:disabled + .cr,
.radio label input[type="radio"]:disabled + .cr {
    opacity: .5;
}

.bigCheckbox{
    font-size: 1.5em;
}