How to make hovering only on icon?

BAD HOVERING

CODE

I need to make the hoovering only on icon.

css code :

.wrapper .language .arrow {
    color: black;
    font-size: 35px;
    margin-left: 200px;
    bottom: 19px;
    position: relative;
}

.wrapper .language .arrow:hover {
    background-color: #5a0f0f;
    
}