body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.5;

    background-color: aliceblue;
    color: darkslategray;
    margin: 1;
    padding: 1;
}
.banner {
    display: block;
    margin: auto;
}
h1, h2, h3 {
    font-family: 'Bebas Neue', 'Courier New', Courier, monospace;
    color: navy;
}
h1 {
    text-align: center;
    margin-top: 1rem;
    font-size: 2.2rem;
}
blockquote {
    font-family: Georgia, 'Times New Roman', Times, serif;
    font-style: italic;
    color: midnightblue;
    background-color: lightsteelblue;
    border-left: 5px solid steelblue;
    padding: 1em;
}

.responsive_img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 15px 1;
    border-radius: 4px;
}

a:link {
    color: #004080;
    text-decoration: underline;
}
a:visited {
    color: darkslateblue;
}
a:hover {
    text-decoration: none;
    color: #0b57d0;
}
a:active {
    color: darkorange;
}
table, td, th {
    border: 1px solid darkslategray;
    padding: 2px;
}
th {
    background-color: midnightblue;
    color: white;
    padding: 2px;
}
.submitbtn {
    background-color: rgb(0, 0, 194);
    color: white;
}
.submitbtn:hover {
    background-color: navy;
}
input[type="text"],
input[type="email"] {
  width: 40%;
  padding: 2px;
}
select {
    width: auto;
    padding: 2px;
}
.visually-hidden {
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.visually-hidden:focus {
    clip: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    position: absolute;
    width: auto;
    outline: none;
    top: 10px;
    left: 10px;
    background-color: navy;
    color: white;
    font-size: 1.1rem;
    font-weight: bold;
    padding: 12px 20px;
    border: 2px solid steelblue;
    border-radius: 4px;
}

.content_grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

#primary_img, #primary_img_txt {
    display: block;
}

@media screen and (min-width: 300px) {
    body {
        font-size: 14px;
    }
}

@media screen and (min-width: 500px) {
    body {
        img {
            max-width: 50%;
        }
    }
}

@media screen and (max-width: 500px) {
    #primary_img {
        display: none;
    }
    #primary_img_txt {
        display: none;
    }
}

@media screen and (min-width: 768px) {
    .content_grid {
        grid-template-columns: 1fr 1fr;
    }
    body {
        font-size: 16px;
    }
}

@media screen and (min-width: 992px) {
    .content_grid {
        grid-template-columns: 1.5fr 1.5fr;
        max-width: 1200px;
        max-width: 100%;
    }
    h1 {
        font-size: 2.8rem;
    }
    img {
        max-width: 100%;
    }
}