/* Default theme */
        body {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background-color: #f9f9f9;
			color: #333;
         }
        #logo {
            height: 50px;
            border-radius: 50%;
        }
		h1 {
			color: #333;
		}
		/* Menu styles */
        nav {
            background-color: #ebebeb;
            color: black;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 20px;
          }
      
          ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
          }
      
          li {
            margin-right: 20px;
          }
      
          a {
            color: black;
            text-decoration: none;
            transition: color 0.5s ease-out;
          }
      
          a:hover {
            color: green;
          }
        /* Header styles */
        header {
            background-color: lightgrey;
            color: #333;
            padding: 50px 20px;
            text-align: center;
        }
        /* Footer styles */
        footer {
            background-color:#ebebeb;
            color: black;
            width: 100%;
            height: 100px;
            text-align: center;
            margin-top: auto;
        }
        footer p {
            margin: 0;
            line-height: 100px;
        }
	
/*--------------------------------------*/
#description {
    height:1000px;
}
#button {
    display: inline-block;
    background-color: green;
    width:40px;
    height:40px;
    text-align: center;
    border-radius: 4px;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: background-color 0.3s,opacity 0.5s, visibility 0.5s;
}

#button::after {
    content: "^";
    font-weight: bold;
    color: white;
    font-size: 35px;
    line-height: 50px;
}
#button:hover {
    cursor: pointer;
    background-color: mediumaquamarine;
}
#button.show {
    opacity:1;
    visibility: visible;
}