body {
    margin: 0;
}

header {
    overflow: hidden;
    background-color: #333;
}

.nav-bar-logo {
    padding: 10px;
}

.container {
    display: flex;
    flex-direction: column;
}

.box {
    border: "1px solid black";
    margin: auto;
}

.button {
    background-color: #4CAF50;
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 10px;
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}