removing bullets from sidebar and Categorie wordpress theme

Bullet is very important for a every website.But some time it is crazy for sidbar & categore .Now i will Disscuss how to remov bullets from  sidebar and Categorie wordpress theme. 

Remove bullet form Sidebar

Example:

#sidebar {
    width: 220px;  
    border: 2px #a2a2a2 solid;
    float: right;
    background-color:red;
    list-style:none;
  
}

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