@import url('https://fonts.googleapis.com/css?family=Lato&display=swap');

* {
  box-sizing: border-box;
}

body {
    background-image: linear-gradient(90deg, #7d5fff, #7158e2);
  font-family: 'Lato', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow-x: hidden;
  margin: 0;
}
.search{
    position: relative;
    height: 50px;
}
.search .input{
    background: white;
    border: 0;
    font-size: 18px;
    font-size: 15px;
    height: 50px;
    width: 50px;
    transition: width 0.3s ease;
}
.btn{
    background-color: white;
    border: 0;
    cursor: pointer;
    font-size: 24px;
    position: absolute;
    top: 0;
    left: 0;
    height: 50px;
    width: 50px;
    transition: transform 0.3s ease;
}
.btn:focus, .input:focus{
    outline: none
}
.search.active .input{
    width: 200px;
}
.search.active .btn{
    transform: translateX(198px);
}