html, body {
  height: 100%;
  color: white;
}
body  {
  background-image: url("pildid/taust1.png");
  background-repeat: repeat;
  background-attachment: fixed;  
  background-size: cover;
  background-size: 100%;
}
img.Logo1 {
  width: 30%;
  display: block;
  margin-left: auto;
  margin-right: auto;
} 
h2 {
  text-align: left;
  color: white;
  margin-left: 50px;
} 

h1 {
  color: white;
  margin-left: 100px;
}

.parent {
  container-name: kast;
  margin-top: 100px;
}
.button {
  background-color: rgba(0, 21, 251, 0.771);
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: left;
  text-decoration: none;
  display: inline-block;
  font-size: 30px;
  margin: 8px 20px;
  cursor: pointer;
}
.button1 {
    width: 70%;
    color: white;
}

.button2 {width: 50%;}
.button3 {width: 100%;}

p.ex1 {
  margin-left: 30px;
  font-size: 30px;
}