.en img{
    color: #333;
    height: 16px;
    width: 28px;
}

.es img{
    color: #00a1ff;
    height: 16px;
    width: 28px;
}

.check{
    position: relative;
    width: 30px;
}

.check::before {
    content: '';
    position: absolute;
    width: 30px;
    height: 15px;
    background: rgb(172, 172, 172);
    border-radius: 15px;
}

.check::after {
    content: '';
    position: absolute;
    width: 15px;
    height: 15px;
    background: #fff;
    border-radius: 15px;
    transition: 0.25s;
    border: 2px solid #333;
    box-sizing: border-box;
}

.check:checked::after {
    left: 15px;
    border: 2px solid #00a1ff;
}

.check:checked::before {
    background: #00a1ff;
}