body {
  height: 100%;
  font-family: sans-serif;
  background-size: 100%;
  background-color: #006699 
  opacity: 0.2;
}

html, body {
    margin: 0;
    height: 100%;
  /* overflow-y: hidden; */
}

#clearButton {
  border: solid black 2px;
  font-weight: bold;
  margin: 10px auto 20px auto;
  cursor: pointer;
  background-color: gray;
}

ul {
  list-style-type: none;
  
}

#ul {
  display: table;
  margin: 0 auto;
}

hr {
  width: 90%;
  border-color: black;
}

.footer {
  margin: 75px 0 0 0;
  font-style: italic;
}



#content {
  margin: 50px auto 0 auto;
  width: 25%;
  border: solid 5px rgba(255,255,255,.5);
  background: #006699;
  text-align: center;
}

h1 {
  font-size: 28px;
  opacity: 0.8;
  color: white;
}

input {
  width: 120px;
  border: solid 2px;
  text-align: center;
}

label {
  cursor: pointer;
  display: block;
  width: 100%;
  text-align: right;
  margin: 20px auto 40px auto;
  font-weight: bold;
  color: white;
}

@media (max-width: 768px) {
  #content {
width: 50%;
  }
}

@media (max-width: 425px) {
  #content {
    width: 100%;
  }
}


#article {
  padding:5% 10% 1%;
}