.logo {
    height: 2.2em;
    width: 5.5em;
    border-radius: .4em; 
}
.navbar{
    height: 7em;
    box-shadow: 0 8px 16px 0 rgb(0 0 0 / 20%), 0 6px 20px 0 rgb(0 0 0 / 19%);
    position: fixed;
}

.dowfile {
    color: white;
    font-weight: bold;
    padding: 5px 16px;
    background-color: rgba(0, 136, 169, 1);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease 0s;
} 
.navbar-collapse {
    background-color: black;
    border-radius: .5em;
    opacity: 75%;
    text-align: center;
    padding: 2em 2em 2em 2em;
    font-size: large;
}