*{
  padding: 0;
  margin: 0;
  font-size: 20px;
}

h1{
  text-align: center;
  margin-top: 15px;
  font-family: 'Fredoka One', cursive;
  letter-spacing: 10px;
  font-weight: 200;
  color: #333333;
}

body,html{
  width: 100%;
  height: 100%;
}

.container{
  display: flex;
  justify-content: center;
  align-items: center;
}

.main{
  flex-direction: column;
  height: 100%;
}



.displayRow{
  width: 80px;
  height: 80px;
  margin: 10px;

  text-align: center;
  line-height: 80px;
  border-radius: 10px;
  font-size: 35px;
}

.numberInputRow{
  margin: 2px 10px;
}

.numberInputColumn{
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.btn{
  font-size: 35px;
}

.inputNumberBtn, .deleteBtn, .submitBtn{
  margin: 3px 10px;
  width: 30%;
  height: 90%;
}

.historyList, .hintList{
  width: 50%;
}

.resultbox{
  height: 30%;
  padding: 20px;
  border-top: solid 1px gray;
  border-bottom: solid 1px gray;
  align-items: flex-start;
  overflow-y: scroll;
}

.resultbox::-webkit-scrollbar {
  display: none;
}

.result{
  font-size: 28px;
  width: 100%;
  margin: 10px;
  text-align: center;
  letter-spacing: 5px;
}

@media (max-width: 767px) {
  .container{
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 500px;
  }
}
@media (max-width: 480px) {
  .container{
    display: flex;
    justify-content: center;
    align-items: center;
  }
}
@media (min-width: 768px) and (max-width: 979px) {
  .container{
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 500px;
  }
}
@media (min-width: 980px) {
  .container{
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 500px;
  }
}
@media (min-width: 1200px) {
  .container{
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 500px;
  }
}