curr.css

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body{
  background-image: url(https://www.allinonecalculator.com/images/home/background.jpg);
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container{
  margin-top: -350px;
  background: linear-gradient(315deg, #FCE22A, #30E3DF);
  padding: 10px 24px;
  border-radius: 20px;
  width: 490px;
  box-shadow:rgb(160, 160, 160)5px 23px 30px;
}

h1{
  color: #364547;
  margin-left: 72px;
  margin-bottom: 0.5em;
  font-family: sans-serif;
}


.container .box{
  width: 100%;
  display: flex;
}

.box div{
  width: 100%;
}

select{
  width: 95%;
  height: 40px;
  font-size: 1.2em;
  cursor: pointer;
  background: #66ffcc;
  outline: none;
  color: black;
  margin: 0.2em 0;
  padding: 0 1em;
  border-radius: 10px;
  border: none;
}


input{
  width: 95%;
  height: 40px;
  font-size: 1em;
  margin: 0.2em 0;
  border-radius: 10px;
  border: none;
  background: #cccccc;
  outline: none;
  padding: 0 1em;
}


.btn{
  width: 98%;
  height: 40px;
  background: #364547;
  color: white;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-size: 1em;
  margin: 0.5em 0;
}

/* CSS for button */

#home {
  color: #FCE22A;
  text-decoration: none;
  font-size: 20px;
}

.button-36 {
  background-image: linear-gradient(92.88deg, #455EB5 9.16%, #5643CC 43.89%, #673FD7 64.72%);
  border-radius: 8px;
  border-style: none;
  box-sizing: border-box;
  color: #FFFFFF;
  cursor: pointer;
  flex-shrink: 0;
  font-family: "Inter UI","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Open Sans","Helvetica Neue",sans-serif;
  font-size: 16px;
  font-weight: 500;
  height: 4rem;
  padding: 0 1.6rem;
  text-align: center;
  text-shadow: rgba(0, 0, 0, 0.25) 0 3px 8px;
  transition: all .5s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  margin-top: 390px;
  margin-left: -367px;
}

.button-36:hover {
  box-shadow: rgba(0, 0, 0, 3) 0 1px 30px;
  transition-duration: .1s;
}

@media (min-width: 768px) {
  .button-36 {
    padding: 0 2.6rem;
  }
}