#setting_button{
    background: url('/images/setting.jpg');
    background-size: contain;
    border-radius: 50%;
    width: 75px; 
    height: 75px; 
    position: absolute;
    right: 0;
    margin: 10px;
}

#setting_button:hover{
    transform: translate(5px, 5px);
    transition: all .1s;
    cursor: pointer;
}

@media(max-width: 800px){
    #setting_button{
        width: 50px;
        height: 50px;
        right: 15px;
        margin-top: 20px;
    }
}