Hello
You can change the Sales Booster CSS code by change in following CSS and add this code in Additional CSS
#sales-booster-popup {
position: fixed;
left: 20px;
bottom: 20px;
font-size: 1rem;
background: #fff;
z-index: 7;
max-width: 400px;
width: calc(100vw - 40px);
box-shadow: 0px 0px 7px 0px rgb(0 0 0 / 10%);
transition: all .3s ease-in-out;
}
Robert Hall