@font-face {
  font-family: 'Eorzea';
  src: url(src/Eorzea.ttf);
}
* {
    padding: 0px;
    margin: 0px;
    font-family: Arial, Verdana, sans-serif;
}

body {
    background-color: #008080;
    width: 1000px;
    margin: 25px auto;
}

header {
    height: 100px;
    background-color: #000080;
    padding-bottom: 15px;
    border-radius: 10px;
}

header h1 {
    font-style: italic;
    font-family: Verdana;
    color: white;
    font-size: 30pt;
    text-align: left;
    padding-left: 50px;
    padding-top: 25px;
    text-shadow: black 1px 1px 4px;
}

header h2 {
    font-style: italic;
    font-family: Verdana;
    color: white;
    font-size: 16pt;
    text-align: left;
    padding-left: 850px;
    text-shadow: black 0px 0px 8px;
}

nav {
    text-align: centre;
    margin-top: 20px;
    margin-bottom: 30px;
    background-color: #008080;
    border-radius: 10px;
}

nav ul {
    list-style-type: none;
}

nav li {
    display: inline;
    margin-right: 40px;
    padding-right: 35px;
    padding-left: 35px;
    padding-top: 3px;
    padding-bottom: 3px;
    border-radius: 5px;
    font-weight: bold;
    cursor: default;
    background-color: grey;
    border: #ebebeb 3px outset;
}

nav li:hover {
    border: #fdfdfd 3px inset;
}

nav a {
    text-decoration: none;
    color: white;
    text-shadow: white 0px 0px 1px;
}

nav a:hover {
    color: black;
    text-shadow: none;
}

section {
    background-color: #008080;
    width: 730px;
    float: left;
}

article {
    border: white 4px groove;
    padding: 20px;
    text-align: left;
    overflow: auto;
    margin-bottom: 25px;
    margin-right: 30px;
    border-radius: 15px
}

article img {
    
border: 4px solid white;
padding: 2px;
display: block;
margin: auto;

}

article h2 {
    font-size: 14pt;
    color: white;
    padding-bottom: 10px;
    letter-spacing: 1px;
    font-weight: bold;
    text-align: centre;
}

article p {
    font-size: 12pt;
    padding-bottom: 10px;
    color: white;
}

article blockquote {
    font-weight: bold;
    font-family:"Eorzea";
    font-style: Eorzea;
    font-size: 13pt;
    padding: 15px;
    background-color: #ffffff;
    border-radius: 10px;
    color: black;
}

video {
    width: 480px;
    height: 270px;
    float: right;
    padding: 2px;
    border: gray 1px solid;
    border-radius: 4px;
    background-color: #0007;
}

aside {
    text-align: center;
    padding-right: 10px;
    width: 155px;
    float: right;
    color: white;
    padding: 35px;
    background-color: #005580;
    border-radius: 15px;
}

aside h3 {
    font-size: 16pt;
    padding-bottom: 10px;
    font-variant: small-caps;
    padding-top: 25px;
}

aside p {
    font-size: 12pt;
    font-style: italic;
    font-weight: bold;
    color: #E1E1E1;
}

aside img {
    width: 100px;
    height: 100px;
    border: none;
}

footer {
    clear: both;
    text-align: center;
    padding: 5px;
    background-color: #ffffff;
    color: black;
    border-radius: 10px;
}

footer p {
    font-size: 12pt;
    font-weight: bold;
    font-family: monospace;
    text-shadow: gray 1px 1px 2px;
}

<!-- HTML !-->
<button class="button-10" role="button">Button 10</button>


.button-10 {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 6px 14px;
  font-family: -apple-system, BlinkMacSystemFont, 'Roboto', sans-serif;
  border-radius: 6px;
  border: none;

  color: #fff;
  background: linear-gradient(180deg, #4B91F7 0%, #367AF6 100%);
   background-origin: border-box;
  box-shadow: 0px 0.5px 1.5px rgba(54, 122, 246, 0.25), inset 0px 0.8px 0px -0.25px rgba(255, 255, 255, 0.2);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.button-10:focus {
  box-shadow: inset 0px 0.8px 0px -0.25px rgba(255, 255, 255, 0.2), 0px 0.5px 1.5px rgba(54, 122, 246, 0.25), 0px 0px 0px 3.5px rgba(58, 108, 217, 0.5);
  outline: 0;
}