body {
    background-color:#e8f5ff;
}

img {
    vertical-align: middle;
    border-style: none;
    width: 120px;
}

h1 {
    color:red;
}
main.container {
    margin-top:10px;
    width:500px;
}
div.card-deck{
    padding:10px;
}

form{
    margin-top:30px;
}

.sticky-top {
    position: sticky;
    top: 0;
    z-index: 1020;
    margin-top: 50px;
}