style.css

:root {
    --primary: #1d2066;
    --accent: #212475;
    --background: #191b4f;
    --text: #FFFFFF;
}

.header {
    margin-top: 0px;
    padding-top: 0px;
    border-top: 0px;
    background-color: var(--primary);
    height: 80px;
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
}

body {
    padding-top: 0px;
    margin-top: 90px;
    border-top: 0px;
    background-color: var(--background);
}

.tile_img {
    width: 100px;
    margin-right: 20px;
}

a {
    color: var(--text);
    text-decoration: none;
}

.after_image {
    flex: 1;
}

.image_and_text_container {
    display: flex;
    align-items: center;
    background-color: var(--primary);
    width: 80%;
    border-style: solid;
    border-width: 20px;
    color: white;
    font-size: 40px;
    border-radius: 10px;
    border-color: var(--primary);
    margin-left: auto;
    margin-right: auto;
    margin-top: 20px;
    padding: 20px;
}

.text_column {
    display: flex;
    flex-direction: column;
    text-align: justify;
    align-items: center;
    background-color: var(--accent);
    color: white;
    font-size: 40px;
    border-color: var(--accent);
    margin-left: auto;
    margin-right: auto;
    margin: 60px;
    padding: 30px;
    border-radius: 25px;
    hyphens: auto;
}

img {
    border-radius: 25px;
}

@keyframes rainbow {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: 100% 50%;
    }
}

.paragraph_heading {
    margin: 20px;
    display: flex;
    font-size: 50px;
    color: white;
}

.rainbow_text {
    background: linear-gradient(90deg, #FF0000, #FFA500, #FFFF00, #008000, #00FFFF, #0000FF, #800080, #FF0000);
    background-size: 50% 100%;
    -webkit-background-clip: text;
    color: transparent;
    animation: rainbow 10s linear infinite;
    font-size: 48px;
    text-align: center;
}

.header_button {
    background-color: var(--primary);
    border-width: 0;
    color: var(--text);
    font-size: 50px;
    height: 80px;
    margin-left: 50px;
}

.header_button:hover {
    background-color: var(--accent);
}