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

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: #333;
    color: white;
}

.header-left .logo {
    border-radius: 50%;
    width: 30px;
    height: 30px;
}

.header-middle .search-bar {
    padding: 5px;
    width: 300px;
}

.header-right .btn {
    margin-left: 10px;
    padding: 5px 10px;
    border: none;
    cursor: pointer;
}

.btn.white {
    background-color: white;
    color: black;
}

.btn.black {
    background-color: black;
    color: white;
}

main {
    padding: 20px;
}

.carousel {
    display: flex;
    overflow-x: auto;
    white-space: nowrap;
}

.book-slide {
    display: inline-block;
    width: 150px;
    height: 200px;
    background-color: #ccc;
    margin-right: 10px;
}

.actualites {
    margin-top: 20px;
}

.actualites article {
    margin-bottom: 20px;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #333;
    color: white;
    position: absolute;
    bottom: 0;
    width: 100%;
}

.login-container {
    display: flex;
    justify-content: space-between;
    padding: 50px;
}

.login-form, .signup-form {
    width: 45%;
}

input[type="text"], input[type="email"], input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}