html {
    height: 100%;
}

body {
    height: 100%;
    margin: 0px;
    padding : 0px;
}

button {
    color: darkgray;
}

#w3-top {
    width: 100%;
    height: 55px;
    background-color: #24282e;
}

#logo {
    position: fixed;
    width: 125px;
    left: 100px;
}