.form-check input[type=radio] {
    border-radius: 4px;
    background: var(--white);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--blue-200);
    cursor: pointer;
    margin: 0;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    position: relative;
}

.form-check input[type=radio]:checked::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);  
    background: var(--blue-200);
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
}