body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: rgb(255, 255, 255);
    font-size: 22px;
    background-color: rgb(0, 0, 0);
    text-align: center;
}
img {

    margin: 10px;
    border-width: 1px;
    border-style: solid;
    border-radius: 100px;
    border-collapse: separate;
}
body:before {
    content: "";
    display: block;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: -10;
    background: url("back.jpeg") no-repeat center center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
  }

.navbar {
    overflow: hidden;
    background-color: white;
    position: fixed;
    top: 0;
    width: 100%;
    border-width: 1px;
    border-style: solid;
    border-radius: 100px;
    border-collapse: separate;
}

    .navbar a {
        float: left;
        display: block;
        color: black;
        text-align: center;
        padding: 14px 16px;
        text-decoration: none;
        font-size: 17px;
    }

        .navbar a:hover {
            background: black;
            color: green;
            border-width: 1px;
            border-style: solid;
            border-radius: 100px;
            border-collapse: separate;
		}
		

		.rectangle {
			position: fixed;
			top: 0;
			height: 50px;
			width: 4000px;
			background-color: #000000;
		  }


.main {
    padding: 16px;
    margin-top: 30px;
    height: 1500px; /* Used in this example to enable scrolling */
}
a {
    text-decoration: none;
    outline: none;
}
button {
    background-color: #4CAF50;
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
  }