body {
    margin: auto;
    font-family: sans, 'Noto Color Emoji', 'Apple Color Emoji', 'Segoe UI Emoji';
    line-height: 1.6;
    background: white;
    color: black;
}

header {
    text-align: center ;
    font-family: sans ;
    padding-bottom: 15pt;
}

h1,h2,h3,h4,h5,h6 {
    text-align: center;
    clear: both;
}

.with-gif {
    display: flex;
    align-items: center;
    gap: 8px;
}

header {
    padding-bottom: 15;
}
header h1 {
    font-size: 30;
    margin-bottom: 0;
}

main {
    max-width: 50%;
    margin: auto;
}

a {
    color: blue;
    text-decoration: underline;
    font-style: italic;
}
a:hover {
    color: RebeccaPurple;
}

p {
    text-align: center;
}

.propic {
    margin: auto;
    border-radius: 50%;
    display: block;
}

.column {
    float: left;
    padding 10px;
    box-sizing: border-box;
    width: 100%;
}

@media (min-width: 1000px) {
    .column {
        max-width: 50%;
    }
    .column:nth-child(odd) {
        white-space: nowrap;
    }
}

footer {
    margin-left: auto ;
    margin-right: auto ;
    text-align: center ;
    clear: both ;
}