body {
    margin: 0px;
    padding: 0px;
}

/*** The side navigation menu ***/
header {
    position: fixed;
    overflow: auto;
    margin: 0;
    padding: 0;

    width: 200px;
    height: 100%;
    background-color: #3185D9;

    font-weight: 600;
    font-size: 20px;
}

header a {
    display: block;
    padding: 16px;

    color: black;
    text-decoration: none;
}

header a.active {
    color: black;
    background-color: white;
}

header a:hover {
    color: white !important;
    background-color: rgb(255, 145, 13) !important;
}

/*** Other CSS ***/
main {
    margin: 0px 0px 5% 200px;
    padding: 1px 16px;
}

main h1 {
    text-align: center;
    text-decoration: underline;
    color: rgb(255, 145, 13);
    font-size: 40px;
    font-weight: bold;
}

section {
    width: 70%;
    margin: auto;
    font-size: 20px;
}

section .images {
    text-align: center;
}

section .images img {
    width: 30%;
    margin-right: 5%;
}

.images1 {
    display: grid;
    grid-template-columns: auto auto auto;
}

.images1 img {
    max-height: 200px;
}

footer {
    text-align: center;
    margin-left: 200px;
}