.contenedor-radio {
    display: block;
    position: relative;
    padding-left: 35px;
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 15px;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

    /* Hide the browser's default radio button */
    .contenedor-radio input {
        position: absolute;
        opacity: 0;
        cursor: pointer;
    }

/* Create a custom checkbox */
.checkmark-radio {
    position: absolute;
    top: 0;
    left: 0;
    height: 25px;
    width: 25px;
    background-color: #eee;
    border-radius: 50%;
}

/* On mouse-over, add a grey background color */
.contenedor-radio:hover input ~ .checkmark-radio {
    background-color: #ccc;
}

/* When the checkbox is checked, add a blue background */
.contenedor-radio input:checked ~ .checkmark-radio {
    background-color: #2196F3;
}

/* Create the checkmark/indicator (hidden when not checked) */
.checkmark-radio:after {
    content: "";
    position: absolute;
    display: none;
}

/* Show the checkmark when checked */
.contenedor-radio input:checked ~ .checkmark-radio:after {
    display: block;
}

/* Style the checkmark/indicator */
.contenedor-radio .checkmark-radio:after {
    top: 9px;
    left: 9px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
}