body {
    background-image: url('nasapic2.jpg');
    background-size: cover;
    background-position: center center; /* Centers the image */
    background-repeat: no-repeat; /* Prevents image repetition */
}


.top-header {
    color: white;
    font-size: 50px;
    font-family: 'Times New Roman', Times, serif;
    font-weight: bold;
    text-align: center;
    text-shadow: 2px 2px 5px grey;

}

.middletextbox {
    background-color: white;
    text-align: justify;
    color: black;
    height: 375px;
    width: 40%;
    margin: auto;
    padding-left: 20px;
    padding-top: 5px;
    padding-right: 20px;
    padding-bottom: 5px;
    font-family: Arial, Helvetica, sans-serif;
    border: 2px solid grey;
    border-radius: 5px;
    overflow: auto;

}

.navigationbar {
    background-color: white;
    text-align: center;
    color: black;
    height: 40px;
    width: 42%;
    margin: 30px auto 0 auto;
    padding-left: 10px;
    padding-right: 10px;
    padding-bottom: 5px;
    border: 2px solid grey;
    border-radius: 5px;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;

}