@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

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

body {
    background-image: linear-gradient(90deg, #54a325, #6349cb);
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

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

.input {
    background-color: #fff;
    border: 0;
    font-size: 18px;
    padding: 15px;
    height: 50px;
    width: 50px;
    transition: width 0.3s ease;
}

.btn {
    background-color: #fff;
    border: 0;
    font-size: 24px;
    height: 50px;
    width: 50px;
    position: absolute;
    top: 0; left: 0;
    transition: transform 0.3s ease;
}

.btn:focus,
.input:focus {
    outline: 0;
}


.search.active .input {
    width: 200px;
}

.search.active .btn {
    transform: translateX(198px);
}