Hi Sourav,

Please add below CSS code to WP-Admin → Appearance → Customize → Additional CSS:

.woofc-count.woofc-count-bottom-right {
    right: 100px;
}

You can change 100px to another number as you want.

It needs the knowledge about CSS code. Each element on Fly Cart has a different selector, which you can use to write CSS code. For example, the Checkout button here:

You can write CSS code:

.woofc-action-checkout {
    background-color: green !important;
    border-color: green !important;
    color: #fff !important;
}

And the result:

For the bubble, please use the CSS structure below:

.woofc-count {
    /* bubble */
    width: 48px;
    height: 48px;
    line-height: 48px;
}
.woofc-count i {
    /* icon */
    line-height: 48px;
}
.woofc-count span {
    /* counter */
    width: 20px;
    height: 20px;
    line-height: 20px;
}