app.css

/* welcome */

.welcome-container .welcome {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    margin: auto;
    width: 100%;
    height: 100px;
    line-height: 100px;
}

.welcome-container .welcome input {
    font-size: 40px;
    padding: 10px;
    text-align: center;
    height: 100px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

.welcome-container .welcome button {
    padding: 10px;
    vertical-align: top;
    height: 100px;
    width: 245px;
    font-size: 30px;
}

.navbar-element {
    text-align: center;
    display: block;
    background-color: #337ab7;
    position: fixed;
    width: 100%;
}

.navbar-element nav {
    display: inline-block;
    float: none;
    border-color: transparent;
    margin: 0px;
    background-color: #337ab7;
}

.navbar-element .navbar-brand {
    padding: 15px 130px;
}

.navbar-element a.navbar-brand {
    color: #fff;
    text-transform: uppercase;
}

.navbar-element a.navbar-brand:active, .navbar-element a.navbar-brand:focus {
    color: #fff;
    text-decoration: none;
}

.navbar-element a.navbar-brand:hover {
    color: #fff;
    text-decoration: underline;
}

.welcome-container .initial-posts {
    margin-top: 150px;
}

.welcome-container .initial-posts h3 {
    color: rgb(81, 163, 255)
}

.welcome-container .post-description {
    width: 50%;
    text-align: center;
    margin: 10px auto;
}

.welcome-container .initial-posts-list {
    padding-bottom: 50px;
}

.navbar-element .container-fluid .notactive {
    color: #ccc;
    text-decoration: none;
}

.navbar-element .container-fluid .active {
    color: #fff !important;
    text-decoration: underline !important;
    cursor: pointer !important;
}

.navbar-element .container-fluid .notactive:hover, .navbar-element .container-fluid .notactive:focus {
    color: #ccc;
    text-decoration: none;
    cursor: not-allowed;
}

.welcome-container img {
    max-width: 50%;
}

/* end welcome */