body {
    margin: 0;
    margin-top: 50px;
    font-family: 'Segoe UI', sans-serif;
    text-align: center;
    color: #333;
}

header {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    line-height: 50px;
    background-color: rgba(231, 230, 230);
}

header * {
    display: inline;
    height: 50px;
}

header ul {
    padding: 0;
}

header li {
    margin-left: 20px;
}

section {
    height: 100vh;
    border: 1px solid black;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    
    background-size: cover; /* Add this line */
    background-position: center center; /* Add this line */
    background-repeat: no-repeat; /* Add this line */
    background-attachment: fixed; /* Add this line */
}

input, button {
  padding: 8px;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid #ccc;
  margin-top: 6px;
}

button {
  background-color: #0078D4;
  color: white;
  border: none;
  cursor: pointer;
}

#home .profile-img {
    width: 100px;
}

#products .profile-img {
    width: 150px;
}

#download .profile-img {
    width: 100px;
}

#eX-ray .profile-img {
    width: 150px;
}

#eula .profile-img {
    width: 150px;
}

#install .install-img {
    width: 300px;
}

#personel .profile-img {
    width: 150px;
}

footer {
    text-align: center;
    padding: 50px;
}

#home h1 {
    font-size: 3em;
}

section h2 {
    font-size: 2.5em;
}

section h3 {
    font-size: 1.5em;
}

header a {
    text-decoration: none;
    color: black;
}

#header_text {
    font-size: 0.8em;
    font-weight: bold;
    font-style: italic
}

#error_text {
    font-size: 1.0em;
    color: darkred;
}

#feature_header_text {
    font-size: 1.2em ;
    font-style: bold;
}

#install_text {
    font-size: 0.9em;
    font-style: normal;
}

#detail_text {
    font-size: 0.8em;
    font-style: normal
}

table {
    font-size: 0.9em;
    font-style: normal    
}

.left {
    text-align: left;
    padding: 15px;
}

.brmedium {
    display: block;
    margin-bottom: 0.5em;
}

/* Add everything below here */

.loader {
    border: 16px solid #f3f3f3; /* Light grey */
    border-top: 16px solid #008000; /* dark green */
    border-radius: 50%;
    width: 120px;
    height: 120px;
    animation: spin 2s linear infinite;
    position: fixed;
    top: 40%;
    left: 45%;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}


.video-container {
    position: relative;
    padding-bottom: 56.25%;
    padding-top: 35px;
    height: 0;
    overflow: hidden;
}


.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.card {
  /* Add shadows to create the "card" effect */
  box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
  transition: 0.3s;
}

/* On mouse-over, add a deeper shadow */
.card:hover {
  box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2);
}

/* Add some padding inside the card container */
.container {
  padding: 2px 16px;
}

table#featuretable {
  table-layout: fixed ;
  width: 100% ;
}
table#featuretable td {
  width: 50% ;
  padding: 10px ;
}

#home {
    background-image: linear-gradient(rgba(252,241,126,0.65),rgba(252,241,126,0.65)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#products {
    background-image: linear-gradient(rgba(167,240,129,0.75),rgba(167,240,129,0.75)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#download {
    background-image: linear-gradient(rgba(167,240,129,0.75),rgba(167,240,129,0.75)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#video {
    background-image: linear-gradient(rgba(150,204,235,0.75),rgba(247,202,201,0.75)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#install_tutorial {
    background-image: linear-gradient(rgba(246,175,227,0.75),rgba(246,175,227,0.75)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#eX-ray {
    background-image: linear-gradient(rgba(226,240,217,0.65),rgba(226,240,217,0.65)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#personel {
    background-image: linear-gradient(rgba(246,175,227,0.75),rgba(246,175,227,0.75)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#install {
    background-image: linear-gradient(rgba(246,175,227,0.75),rgba(246,175,227,0.75)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#contact {
    background-image: linear-gradient(rgba(150,204,235,0.75),rgba(247,202,201,0.75)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}

#eula {
    background-image: linear-gradient(rgba(252,241,126,0.65),rgba(252,241,126,0.65)), url('https://www.tsemed.com/landing/christopher-burns-canyon.jpg');
}