How to remove background blue color that pops up and goes when the switch(html toggle switch using checkbox) is clicked?

This is my html code for the switch

            <div class="switch-container">
                <p>Value1</p>
                <label class="switch">
                    <input type="checkbox">
                    <span class="slider round"></span>
                </label>
                <p>Value2</p>
            </div>

This is how the element is styled in css file

/* 
-----------Switch---------
 */
.switch-container{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

/* It contains the actual switch */
.switch{
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

/* Hide the square box */
.switch input{
    display: none;
    outline: none;
}

/* The slider inside which the circle moves */
.slider{
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    -webkit-transition: .4s;
    transition: .4s;
    border-radius: 34px;
}


/* The moving circle inside the slider */
.slider::before{
    position: absolute;
    content: "";
    height:26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    -webkit-transition: .4s;
    border-radius: 50%;
    transition: .4s;
}


/* Give the color when selected */
input:checked + .slider{
    background-color: #2196f3;
}

input:focus + .slider{
    outline: none;
    box-shadow: 0 0 1px #2196f3;
}


/* Move the ball on click */
input:checked + .slider:before{
    -webkit-transform: translateX(26px);
    -ms-transform: translateX(26px);
    transform: translateX(26px)
}

Problem :

When the switch is clicked there is a blue box which pops up and goes away behind the switch. I already tried to set outline as none but its not working.

How to remove the background blue tint that pops up when the switch is clicked ?