.navbar-brand {
    background-color: lightskyblue;
    font-weight: bold;
}

body {
    background-color: rgb(240, 240, 240);
    position: relative;
}

.page-header {
    color: lightskyblue;
}

.box {
    background-color: white;
    padding: 10px 30px;
}

.intro {
    font-size: 16px;
}

footer {
    background-color: gray;
    color: white;
    text-align: center;
    border-top: 5px solid;
    border-top-color: lightskyblue;
    width: 100%;
    height: 50px;
    position: fixed;
    bottom: 0;
    display: inline-block;
    vertical-align: middle;
}

.header-text {
    color: lightskyblue;
    text-align: center;
}

.img-comparison {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 75%;
}

.big-img {
    padding: 20px;
}

/* Small devices (tablets, 768px and up) */
@media (min-width: 768px) {
    [class*="col-sm-"]
}

/* Medium devices (desktops, 992px and up) */
@media (min-width: 992px) {
    [class*="col-md-"]
}

/* Large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    [class*="col-lg-"]
}