@import url('https://fonts.googleapis.com/css2?family=Nunito&family=Poppins:wght@300&display=swap');

* {
  margin: 0;
  padding: 0;
  outline: none;
  box-sizing: border-box;
}
body {
  font-family: 'Nutino', sans-serif;
  display: flex;
  text-align: center;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(to right, #8e2de2, #4a00e0);
  overflow: hidden;
}
.container {
  background: rgba(190, 183, 183, 0.4);
  transform-style: preserve-3d;
  transition: .3s;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
  max-width: 23rem;
  width: 100%;
  margin: 0 auto;
  padding: 1rem 2rem;
  border-radius: .5rem;
}
.container h2{
  color: rgb(255, 255, 255);
  font-size: 2rem;
}
input[type="text"] {
  height: 60px;
  width: 300px;
  margin: 0 auto;
  margin-top: 15px;
  border-radius: 10px;
  border: none;
  color: rgb(12, 12, 12);
  font-size: 22px;
  font-weight: bold;
  text-align: right;
  padding-right: 20px;
  outline: none;
  background: #fff;
  box-shadow: 0 15px 10px rgba(0, 0, 0, 0.2);
}
form .btns {
  width: 300px;
  margin: 0 auto;
  margin-top: 20px;
}
input[type="button"] {
  width: 58px;
  height: 55px;
  margin: 5px;
  font-size: 22px;
  font-weight: bold;
  border-radius: 6px;
  border: none;
  background: #fdfdfd;
  box-shadow: 0 15px 10px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  margin-bottom: 10px;
}
input[type="button"]:hover {
  transition: 0.5s;
  background: linear-gradient(#b8df0b, #18e65d);
}
input#clear {
  background: #e20404;
  border: none;
  transition: .2s;
  color: white;
}
input#clear:hover{
  transform: scale(1.05);
  background: #bd0303;
}
input#equal {
  width: 275px;
  margin: 10px 0 10px 0;
  font-size: 30px;
  color: white;
  background: #ff7c01;
  border: none;
  transition: all .2s;
}
input#equal:hover{
  transform: scale(1.05);
  background: #df6d03;
}

@media (max-width:360px){
  .container{
    width: 20rem;
    padding: .5rem;
  }
}