body {
    font-family: sans-serif;
    color:  #f9f9f9;
    margin: auto;
    width: 100%;
    height: 100px;
    background: #363636;
}

.Menu-Principal {
    background: #2d90f6;
    width: 100%;
    height: 105px;
}

img {
    width: 17%;
    margin-left: 40px;
}

.centro {
    margin-left:  80px;
}

button {
    outline-style: none;
    width: 17%;
    height: 30px;
    transition: 2s;
    background: #363636;
    border-radius: 20px;
    border-color: #2d90f6;
    color: #f9f9f9;
    cursor: pointer;
    border-width: 10000%;
}

button:hover {
    background: #2d90f6;
}

ul {
    margin-left: 10px;
}

a {
    margin-left: 30px;
}

a {
    color: #f9f9f9;
    text-decoration: none;
}

a:hover {
    color: #363636;
}