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

* {
    box-sizing: border-box;
}

body{
    background-image: linear-gradient(90deg,#7d5fff,#7158e2);
    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: #ffff;
        border:0;
        font-size: 18px;
        padding:15px;
        height:50px;
        width:50px;
        transition: width 0.3s ease;
}

.btn{
    background-color: #fff;
    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);
}