nav {
    background-color: #17a2b8;
}

nav .navbar-brand {
    color: white;
}

.navbar-brand {
    margin: initial;
}

.container {
    max-width: 800px;
}

.container-color {
    background-color: #dae6e6;
}

.main {
    padding-top: 30px;
}

.card {
    max-width: 550px;
    margin: auto;
    margin-bottom: 30px;
}

.card-header {
    background-color: #17a2b8;
    color: white;
}

.item {
    align-items: center;
    
}

.footer {
    margin: auto;
    max-width: 500px;
    margin-bottom: 16px;
    margin-top: 16px;
}