* {
    margin: 0;
    padding: 0; 
    box-sizing: border-box;
}
body {
    width: 100vw;
    height: 100vh;
    justify-content: center;
    align-items: center;
    background: linear-gradient(to bottom, lightcyan, dodgerblue);
}
h1.sea {
  text-align: center;
}
h2.headertekst {
  text-align: left;
}
.container {
    width: 80%;
    height: 80%;
    
}
form {
  text-align: center;
  color: red;
  
  opacity: 0.9;
}
.back {
  text-align: bottom;
  color: red;
  opacity: 0.9;
  position: relative;
}
div.gallery {
  text-align: left;
  margin: 1%;
  border: 1px solid #ccc;
  float: left;
  width: 15%;
  height: 80%;
}

div.gallery:hover {
  border: 1px solid #777;
}

div.gallery img {
  width: 100%;
  height: auto;
}

div.desc {
  padding: 15%;
  text-align: center;
}
.btn {
  background-color: #4CAF50; /* Green */
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
}
.but {
  background-color: #e0c653; 
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
}
.tton {
  background-color: #3b3591; /* Green */
  border: none;
  position: fixed;
  left: center;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
}