html, body {
  background: #638d64;

     -moz-user-select: none; /* Firefox */
      -ms-user-select: none; /* Internet Explorer */
   -khtml-user-select: none; /* KHTML browsers (e.g. Konqueror) */
  -webkit-user-select: none; /* Chrome, Safari, and Opera */
  -webkit-touch-callout: none; /* Disable Android and iOS callouts*/
    
  overscroll-behavior-y: none;

    font-family: "Sen", sans-serif;
}

.card {
  background-color: #4b6a4c;
  width: 350px;
  margin: auto;
  margin-bottom: 10px;
  padding: 10px;
  border: none;
  outline: none;
}

#card4, #card5, #card6, #card7, #card8, #card9, #card10 {
  display: none;
}

p {
  max-width: 30em;
  color: white;
  font-size: 1.2em;
  text-align: center;
  margin: 10px 0 10px 0;
  letter-spacing: 0.1em;
}

#subject {
	text-transform: uppercase;
}

.container {
  padding-top: 4em;
  padding-bottom: 2em;
  text-align: center;
}

.butt {
  margin: 20px;
  outline: none;
  border: none;
  border-width: 2px;
  padding: 5px;
  margin-top: 30px;
  text-decoration: none;
  color: white;
  background-color: #3b533b;
  height: 60px;
  width: 60px;
  border-radius: 30px;
  transition: 0.2s;
  font-size: 1em;
}