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

:root {
    color-scheme: light;
}

html,
body {
    min-height: 100%;
}

button {
    border: 0;
    background: none;
    cursor: pointer;
}

input {
    outline: none;
}

.back-btn {
    position: absolute;
    top: 16px;
    left: 12px;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    transition: opacity 0.3s;
}

.back-btn:hover {
    opacity: 0.8;
}

.back-btn img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}