index.css

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

#bacground_color {
    background-color: blue;
    padding-left: 1em;
    width: 42%;
    height: 420px;
    margin-left: 2em;
    margin-top: 2em;
}

#background_img {
    display: flex;
    padding-top: 3em;
    padding-left: 4em;
    padding-right: 3em;
}

#tag-2 {
    padding-left: 4em;
    margin-top: 210px;
    width: 420px;
    height: 310px;
}

#about-tag {
    padding-left: 120px;
    padding-right: 2em;
    padding-top: 210px;
    font-size: 24px;
}

h3 {
    font-size: 28px;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}

button {
    color: white;
    background-color: black;
    width: 210px;
    height: 42px;
}

button:hover {
    color: black;
    background-color: white;
}

fieldset {
    border: 2px solid black;
    width: auto;
}