body {
  margin: 0 0 0 0;
  position: fixed;
  height: 100%;
  width: 100%;
  font-family: "Lucida Console", "Courier New", monospace;
}

.container {
  display: flex;
  flex-direction: row;
  width: 100%;
  height: 100%;
}

#twobuttons {
  width: 100%;
}



@media (max-width: 640px) {
  #button {
    width: 20%;
  }
}

.topic {
  border: 1;
  flex-grow: 10;
  flex-basis: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 1rem 1rem 1rem;
}

.btn {
  padding: 2vw;
  margin: 1vw;
  transition: all 0.25s ease;
  font-family: bold "Lucida Console", bold "Courier New", bold monospace;
  font-size: 5vw;
  color: #000;

  border-style: solid;
  border-width: 0.4vw;
  border-color: black;
  background-color: rgb(164, 164, 164);
  box-shadow: 0.75vw 0.75vw black;
  cursor: pointer;
}

#math {
  background-color: rgb(48, 96, 96);
}

#biology {
  background-color: rgb(107, 165, 107);
}

.text {
  border-style: solid;
  border-width: 0.2rem;
  border-color: transparent;
  background-color: transparent;
  box-shadow: 0.8rem 0.8rem rgba(0, 0, 0, 0);
}

.selected {
  background-color: deeppink;
  color: white;
  box-shadow: 0.8rem 0.8rem black;
}

#next:hover {
  background-color: deeppink;
  color: white;
  box-shadow: 0.8rem 0.8rem black;
}

.response {
  visibility: hidden;
  width: 90%;
  display: flex;
}

.dataresponses {
  height: 1rem;
  background: deeppink;
  color: white;
  font-size: 1rem;
  padding: 1rem 1rem 1rem 1rem;
}

#bar2 {
  margin-left: auto;
  text-align: right;
}

footer {
  display: flex;
  flex-direction: row-reverse;
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 2.5rem;
}

a {
  all: unset;
  cursor: pointer;
  margin: 0.5rem;
}