body{
    font-family: Montserrat;
    margin: 0px;

}

.header{
    display: flex;
    position: fixed;
    justify-content: space-between; 
    height: 60px;
    align-items: center;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgb(255, 255, 255);
}

.left-bar{
    display: flex;
    margin-left: 20px;
}

.center-bar{
    background-color: blue;
    display: flex;
}

.right-bar{
    background-color: green;
    display: flex;
}