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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #333;
    color: #333;
}

h1 {
    text-align: center;
    padding: 25px 0;
    color: #f1f1f1;
}

.recherche-poke {
    max-width: 700px;
    width: 70%;
    min-width: 450px;
    margin: 30px auto;
    position: relative;
    display: flex;
}

.inp-group {
    width: 100%;
}

.recherche-poke input {
    width: 100%;
    padding: 15px;
    border: none;
    outline: none;
    border-radius: 3px;
    font-size: 18px;
}

.recherche-poke button {
    margin-left: 5px;
    padding: 15px;
}

.recherche-poke label {
    position: absolute;
    color: #333;
    top: 50%;
    transform: translateY(-50%);
    padding-left: 8px;
    transition: all 0.3s ease-in;
}

/* animation d'input */

.recherche-poke:focus-within label,
.recherche-poke.active-input label {
    top: -15px;
    padding-left: 5px;
    color: #f1f1f1;
}