style.css

* {
  font-family: Helvetica-Neue, sans-serif;
}

#app {
  background-color: #1a1a1d;
  height: 100%;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  overflow: auto;
  display: flex;
  align-items: center;
  flex-direction: column;
}

#heading {
  font-size: 3vmax;
  color: white;
}

.input-box,
hidden-input-box {
  border-radius: 5%;
  border: none;
  margin-top: 1vh;
}

.hidden-input-box {
  visibility: hidden;
}

#color-codes {
  display: flex;
  justify-content: space-around;
  margin-top: 0.8vh;
  color: white;
}

#color-codes > span {
  font-size: 1vmax;
  padding-right: 1vw;
  padding-left: 1vw;
}

#user-inputs {
  display: flex;
  justify-content: space-around;
  margin-top: 5vh;
  margin-bottom: 10vh;
}

@media screen and (max-width: 500px) {
  #user-inputs {
    flex-direction: column;
    margin-bottom: 5vh;
  }

  .hidden-input-box {
    display: none;
  }
}

.user-input {
  display: flex;
  justify-content: space-around;
  flex-direction: column;
  align-items: center;
  margin-left: 1vw;
  margin-right: 1vw;
  margin-top: 5vh;
}

.user-input > input {
  width: 12vmax;
  height: 4vh;
  font-size: 2vmax;
}

.dropdown-content {
  display: none;
  position: absolute;
}

.menu-button {
  border: 2px solid paleturquoise;
  background-color: #1a1a1d;
  color: white;
  font-size: 1vmax;
  padding: 1.3vmax;
  width: 13vmax;
  border-radius: 10px;
}

.menu-button:hover {
  opacity: 0.5;
  cursor: pointer;
}

.dropdown-content-button,
.dropdown-button {
  display: block;
  border-radius: 0px;
}

.dropdown-content-button:hover {
  opacity: 1;
  background-color: paleturquoise;
  color: black;
}

#array {
  display: flex;
  border: 0.25px solid gray;
  flex-flow: wrap;
}

.elem {
  border: 0.25px solid gray;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}