html,
body,
div,
img {
    padding: 0;
    border: none;
    margin: 0;
    box-sizing: border-box;
}

html {
    width: 100%;
    height: 100%;
    background: #010101;
}

body {
    width: 100%;
    max-width: 550px;
    height: 100%;
    margin: 0 auto;
}

img {
    display: block;
    width: 100%;
}

.head {
    background: #191919;
    padding: 10px 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.head .btn {
    width: 20%;
}

.head .title {
    width: 40%;
}

.nav_grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
}