@import url('https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,500,500i,700,700i,900,900i');

* {
    box-sizing: border-box;
}
body {
    background-color: #00DBDE;
    background-image: linear-gradient(90deg, #00DBDE 0%, #FC00FF 100%);
    font-family: 'Roboto', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    margin: 0;
}

.search {
    position: relative;
    height: 50px;
}

.search .input {
    background-color: #ffffff;
    border : 0;
    font-size: 18px;
    height: 50px;
    width: 50px;
    transition: width 0.5s ease;
}

.btn {
    background-color: #ffffff;
    border: 0;
    cursor: pointer;
    font-size: 24px;
    position: absolute;
    top: 0;
    left: 0;
    height: 50px;
    width: 50px;
    transition: transform 0.5s ease;
}

.btn:focus, .input:focus {
    outline: none;
}

.search.active .input {
    width: 200px;
    padding-left: 18px;
    
}

.search.active .btn {
    transform: translateX(200px);
    
}