main.css

body{
    background: linear-gradient(to left, aqua, orange);
    line-height: 0.5;
    text-align: center;
  }

.main{
    width: 500px;
    padding-bottom: 100;
    position: absolute;
    top:40%;
    left:50%;
    transition:0.25px;
    transform: translate(-50%,-50%);
    justify-items: center;
    text-align: center;
}

.card{
  box-shadow: 0 4px 8px 0;
  transition: 0.4s;
  width: 300px;
  text-align: center;
  font-size: 16px;
  float: left;
  margin: 10px;
}

h1{
  font-size: 30px;
  margin-top: 40px;
  color: antiquewhite;
  text-align: center;
}

.values{
  width: 240px;
  text-align: center;
  border: 2px solid transparent;
  border-radius: 5px;
  font-size: 20;
  padding: 10px 0px;
  transition: border 0.5px;
}

#buttons{
  border:3px solid;
  background-color: green;
  color: white;
  font-size: 16px;
  border-radius: 5px;
  cursor: pointer;
  text-align: center;
  width: 80px;
  height: 40px;
  margin-left: 40px;
}


label{
  font-size: 20px;
}